1,2
1,3
1,4
1,5
2,3
2,4
2,5
2,6
3,4
3,5
3,6
3,7
4,5
4,6
4,7
4,8
5,6
5,7
5,8
5,9
6,7
6,8
6,9
6,10
7,8
7,9
7,10
7,11
8,9
8,10
8,11
8,12
9,10
9,11
9,12
9,13
10,11
10,12
10,13
10,14
11,12
11,13
11,14
11,15
12,13
12,14
12,15
12,16
13,14
13,15
13,16
13,17
14,15
14,16
14,17
14,18
15,16
15,17
15,18
15,19
16,17
16,18
16,19
16,20
17,18
17,19
17,20
17,21
18,19
18,20
18,21
18,22
19,20
19,21
19,22
19,23
20,21
20,22
20,23
20,24
21,22
21,23
21,24
21,25
22,23
22,24
22,25
22,26
23,24
23,25
23,26
23,27
24,25
24,26
24,27
24,28
25,26
25,27
25,28
25,29
26,27
26,28
26,29
26,30
27,28
27,29
27,30
27,31
28,29
28,30
28,31
28,32
29,30
29,31
29,32
29,33
30,31
30,32
30,33
30,34
31,32
31,33
31,34
31,35
32,33
32,34
32,35
32,36
33,34
33,35
33,36
33,37
34,35
34,36
34,37
34,38
35,36
35,37
35,38
35,39
36,37
36,38
36,39
36,40
37,38
37,39
37,40
37,41
38,39
38,40
38,41
38,42
39,40
39,41
39,42
39,43
40,41
40,42
40,43
40,44
41,42
41,43
41,44
41,45
42,43
42,44
42,45
42,46
43,44
43,45
43,46
43,47
44,45
44,46
44,47
44,48
45,46
45,47
45,48
45,49
46,47
46,48
46,49
46,50
47,48
47,49
47,50
48,49
48,50
49,50
50,51
51,52
51,53
51,54
51,55
52,53
52,54
52,55
52,56
53,54
53,55
53,56
53,57
54,55
54,56
54,57
54,58
55,56
55,57
55,58
55,59
56,57
56,58
56,59
56,60
57,58
57,59
57,60
57,61
58,59
58,60
58,61
58,62
59,60
59,61
59,62
59,63
60,61
60,62
60,63
60,64
61,62
61,63
61,64
61,65
62,63
62,64
62,65
62,66
63,64
63,65
63,66
63,67
64,65
64,66
64,67
64,68
65,66
65,67
65,68
65,69
66,67
66,68
66,69
66,70
67,68
67,69
67,70
67,71
68,69
68,70
68,71
68,72
69,70
69,71
69,72
69,73
70,71
70,72
70,73
70,74
71,72
71,73
71,74
71,75
72,73
72,74
72,75
72,76
73,74
73,75
73,76
73,77
74,75
74,76
74,77
74,78
75,76
75,77
75,78
75,79
76,77
76,78
76,79
76,80
77,78
77,79
77,80
77,81
78,79
78,80
78,81
78,82
79,80
79,81
79,82
79,83
80,81
80,82
80,83
80,84
81,82
81,83
81,84
81,85
82,83
82,84
82,85
82,86
83,84
83,85
83,86
83,87
84,85
84,86
84,87
84,88
85,86
85,87
85,88
85,89
86,87
86,88
86,89
86,90
87,88
87,89
87,90
87,91
88,89
88,90
88,91
88,92
89,90
89,91
89,92
89,93
90,91
90,92
90,93
90,94
91,92
91,93
91,94
91,95
92,93
92,94
92,95
92,96
93,94
93,95
93,96
93,97
94,95
94,96
94,97
94,98
95,96
95,97
95,98
95,99
96,97
96,98
96,99
96,100
97,98
97,99
97,100
98,99
98,100
99,100
100,101
101,102
101,103
101,104
101,105
102,103
102,104
102,105
102,106
103,104
103,105
103,106
103,107
104,105
104,106
104,107
104,108
105,106
105,107
105,108
105,109
106,107
106,108
106,109
106,110
107,108
107,109
107,110
107,111
108,109
108,110
108,111
108,112
109,110
109,111
109,112
109,113
110,111
110,112
110,113
110,114
111,112
111,113
111,114
111,115
112,113
112,114
112,115
112,116
113,114
113,115
113,116
113,117
114,115
114,116
114,117
114,118
115,116
115,117
115,118
115,119
116,117
116,118
116,119
116,120
117,118
117,119
117,120
117,121
118,119
118,120
118,121
118,122
119,120
119,121
119,122
119,123
120,121
120,122
120,123
120,124
121,122
121,123
121,124
121,125
122,123
122,124
122,125
122,126
123,124
123,125
123,126
123,127
124,125
124,126
124,127
124,128
125,126
125,127
125,128
125,129
126,127
126,128
126,129
126,130
127,128
127,129
127,130
127,131
128,129
128,130
128,131
128,132
129,130
129,131
129,132
129,133
130,131
130,132
130,133
130,134
131,132
131,133
131,134
131,135
132,133
132,134
132,135
132,136
133,134
133,135
133,136
133,137
134,135
134,136
134,137
134,138
135,136
135,137
135,138
135,139
136,137
136,138
136,139
136,140
137,138
137,139
137,140
137,141
138,139
138,140
138,141
138,142
139,140
139,141
139,142
139,143
140,141
140,142
140,143
140,144
141,142
141,143
141,144
141,145
142,143
142,144
142,145
142,146
143,144
143,145
143,146
143,147
144,145
144,146
144,147
144,148
145,146
145,147
145,148
145,149
146,147
146,148
146,149
146,150
147,148
147,149
147,150
148,149
148,150
149,150
150,151
151,152
151,153
151,154
151,155
152,153
152,154
152,155
152,156
153,154
153,155
153,156
153,157
154,155
154,156
154,157
154,158
155,156
155,157
155,158
155,159
156,157
156,158
156,159
156,160
157,158
157,159
157,160
157,161
158,159
158,160
158,161
158,162
159,160
159,161
159,162
159,163
160,161
160,162
160,163
160,164
161,162
161,163
161,164
161,165
162,163
162,164
162,165
162,166
163,164
163,165
163,166
163,167
164,165
164,166
164,167
164,168
165,166
165,167
165,168
165,169
166,167
166,168
166,169
166,170
167,168
167,169
167,170
167,171
168,169
168,170
168,171
168,172
169,170
169,171
169,172
169,173
170,171
170,172
170,173
170,174
171,172
171,173
171,174
171,175
172,173
172,174
172,175
172,176
173,174
173,175
173,176
173,177
174,175
174,176
174,177
174,178
175,176
175,177
175,178
175,179
176,177
176,178
176,179
176,180
177,178
177,179
177,180
177,181
178,179
178,180
178,181
178,182
179,180
179,181
179,182
179,183
180,181
180,182
180,183
180,184
181,182
181,183
181,184
181,185
182,183
182,184
182,185
182,186
183,184
183,185
183,186
183,187
184,185
184,186
184,187
184,188
185,186
185,187
185,188
185,189
186,187
186,188
186,189
186,190
187,188
187,189
187,190
187,191
188,189
188,190
188,191
188,192
189,190
189,191
189,192
189,193
190,191
190,192
190,193
190,194
191,192
191,193
191,194
191,195
192,193
192,194
192,195
192,196
193,194
193,195
193,196
193,197
194,195
194,196
194,197
194,198
195,196
195,197
195,198
195,199
196,197
196,198
196,199
196,200
197,198
197,199
197,200
198,199
198,200
199,200
200,201
201,202
201,203
201,204
201,205
202,203
202,204
202,205
202,206
203,204
203,205
203,206
203,207
204,205
204,206
204,207
204,208
205,206
205,207
205,208
205,209
206,207
206,208
206,209
206,210
207,208
207,209
207,210
207,211
208,209
208,210
208,211
208,212
209,210
209,211
209,212
209,213
210,211
210,212
210,213
210,214
211,212
211,213
211,214
211,215
212,213
212,214
212,215
212,216
213,214
213,215
213,216
213,217
214,215
214,216
214,217
214,218
215,216
215,217
215,218
215,219
216,217
216,218
216,219
216,220
217,218
217,219
217,220
217,221
218,219
218,220
218,221
218,222
219,220
219,221
219,222
219,223
220,221
220,222
220,223
220,224
221,222
221,223
221,224
221,225
222,223
222,224
222,225
222,226
223,224
223,225
223,226
223,227
224,225
224,226
224,227
224,228
225,226
225,227
225,228
225,229
226,227
226,228
226,229
226,230
227,228
227,229
227,230
227,231
228,229
228,230
228,231
228,232
229,230
229,231
229,232
229,233
230,231
230,232
230,233
230,234
231,232
231,233
231,234
231,235
232,233
232,234
232,235
232,236
233,234
233,235
233,236
233,237
234,235
234,236
234,237
234,238
235,236
235,237
235,238
235,239
236,237
236,238
236,239
236,240
237,238
237,239
237,240
237,241
238,239
238,240
238,241
238,242
239,240
239,241
239,242
239,243
240,241
240,242
240,243
240,244
241,242
241,243
241,244
241,245
242,243
242,244
242,245
242,246
243,244
243,245
243,246
243,247
244,245
244,246
244,247
244,248
245,246
245,247
245,248
245,249
246,247
246,248
246,249
246,250
247,248
247,249
247,250
248,249
248,250
249,250
250,251
251,252
251,253
251,254
251,255
252,253
252,254
252,255
252,256
253,254
253,255
253,256
253,257
254,255
254,256
254,257
254,258
255,256
255,257
255,258
255,259
256,257
256,258
256,259
256,260
257,258
257,259
257,260
257,261
258,259
258,260
258,261
258,262
259,260
259,261
259,262
259,263
260,261
260,262
260,263
260,264
261,262
261,263
261,264
261,265
262,263
262,264
262,265
262,266
263,264
263,265
263,266
263,267
264,265
264,266
264,267
264,268
265,266
265,267
265,268
265,269
266,267
266,268
266,269
266,270
267,268
267,269
267,270
267,271
268,269
268,270
268,271
268,272
269,270
269,271
269,272
269,273
270,271
270,272
270,273
270,274
271,272
271,273
271,274
271,275
272,273
272,274
272,275
272,276
273,274
273,275
273,276
273,277
274,275
274,276
274,277
274,278
275,276
275,277
275,278
275,279
276,277
276,278
276,279
276,280
277,278
277,279
277,280
277,281
278,279
278,280
278,281
278,282
279,280
279,281
279,282
279,283
280,281
280,282
280,283
280,284
281,282
281,283
281,284
281,285
282,283
282,284
282,285
282,286
283,284
283,285
283,286
283,287
284,285
284,286
284,287
284,288
285,286
285,287
285,288
285,289
286,287
286,288
286,289
286,290
287,288
287,289
287,290
287,291
288,289
288,290
288,291
288,292
289,290
289,291
289,292
289,293
290,291
290,292
290,293
290,294
291,292
291,293
291,294
291,295
292,293
292,294
292,295
292,296
293,294
293,295
293,296
293,297
294,295
294,296
294,297
294,298
295,296
295,297
295,298
295,299
296,297
296,298
296,299
296,300
297,298
297,299
297,300
298,299
298,300
299,300
300,301
301,302
301,303
301,304
301,305
302,303
302,304
302,305
302,306
303,304
303,305
303,306
303,307
304,305
304,306
304,307
304,308
305,306
305,307
305,308
305,309
306,307
306,308
306,309
306,310
307,308
307,309
307,310
307,311
308,309
308,310
308,311
308,312
309,310
309,311
309,312
309,313
310,311
310,312
310,313
310,314
311,312
311,313
311,314
311,315
312,313
312,314
312,315
312,316
313,314
313,315
313,316
313,317
314,315
314,316
314,317
314,318
315,316
315,317
315,318
315,319
316,317
316,318
316,319
316,320
317,318
317,319
317,320
317,321
318,319
318,320
318,321
318,322
319,320
319,321
319,322
319,323
320,321
320,322
320,323
320,324
321,322
321,323
321,324
321,325
322,323
322,324
322,325
322,326
323,324
323,325
323,326
323,327
324,325
324,326
324,327
324,328
325,326
325,327
325,328
325,329
326,327
326,328
326,329
326,330
327,328
327,329
327,330
327,331
328,329
328,330
328,331
328,332
329,330
329,331
329,332
329,333
330,331
330,332
330,333
330,334
331,332
331,333
331,334
331,335
332,333
332,334
332,335
332,336
333,334
333,335
333,336
333,337
334,335
334,336
334,337
334,338
335,336
335,337
335,338
335,339
336,337
336,338
336,339
336,340
337,338
337,339
337,340
337,341
338,339
338,340
338,341
338,342
339,340
339,341
339,342
339,343
340,341
340,342
340,343
340,344
341,342
341,343
341,344
341,345
342,343
342,344
342,345
342,346
343,344
343,345
343,346
343,347
344,345
344,346
344,347
344,348
345,346
345,347
345,348
345,349
346,347
346,348
346,349
346,350
347,348
347,349
347,350
348,349
348,350
349,350
350,351
351,352
351,353
351,354
351,355
352,353
352,354
352,355
352,356
353,354
353,355
353,356
353,357
354,355
354,356
354,357
354,358
355,356
355,357
355,358
355,359
356,357
356,358
356,359
356,360
357,358
357,359
357,360
357,361
358,359
358,360
358,361
358,362
359,360
359,361
359,362
359,363
360,361
360,362
360,363
360,364
361,362
361,363
361,364
361,365
362,363
362,364
362,365
362,366
363,364
363,365
363,366
363,367
364,365
364,366
364,367
364,368
365,366
365,367
365,368
365,369
366,367
366,368
366,369
366,370
367,368
367,369
367,370
367,371
368,369
368,370
368,371
368,372
369,370
369,371
369,372
369,373
370,371
370,372
370,373
370,374
371,372
371,373
371,374
371,375
372,373
372,374
372,375
372,376
373,374
373,375
373,376
373,377
374,375
374,376
374,377
374,378
375,376
375,377
375,378
375,379
376,377
376,378
376,379
376,380
377,378
377,379
377,380
377,381
378,379
378,380
378,381
378,382
379,380
379,381
379,382
379,383
380,381
380,382
380,383
380,384
381,382
381,383
381,384
381,385
382,383
382,384
382,385
382,386
383,384
383,385
383,386
383,387
384,385
384,386
384,387
384,388
385,386
385,387
385,388
385,389
386,387
386,388
386,389
386,390
387,388
387,389
387,390
387,391
388,389
388,390
388,391
388,392
389,390
389,391
389,392
389,393
390,391
390,392
390,393
390,394
391,392
391,393
391,394
391,395
392,393
392,394
392,395
392,396
393,394
393,395
393,396
393,397
394,395
394,396
394,397
394,398
395,396
395,397
395,398
395,399
396,397
396,398
396,399
396,400
397,398
397,399
397,400
398,399
398,400
399,400
400,401
401,402
401,403
401,404
401,405
402,403
402,404
402,405
402,406
403,404
403,405
403,406
403,407
404,405
404,406
404,407
404,408
405,406
405,407
405,408
405,409
406,407
406,408
406,409
406,410
407,408
407,409
407,410
407,411
408,409
408,410
408,411
408,412
409,410
409,411
409,412
409,413
410,411
410,412
410,413
410,414
411,412
411,413
411,414
411,415
412,413
412,414
412,415
412,416
413,414
413,415
413,416
413,417
414,415
414,416
414,417
414,418
415,416
415,417
415,418
415,419
416,417
416,418
416,419
416,420
417,418
417,419
417,420
417,421
418,419
418,420
418,421
418,422
419,420
419,421
419,422
419,423
420,421
420,422
420,423
420,424
421,422
421,423
421,424
421,425
422,423
422,424
422,425
422,426
423,424
423,425
423,426
423,427
424,425
424,426
424,427
424,428
425,426
425,427
425,428
425,429
426,427
426,428
426,429
426,430
427,428
427,429
427,430
427,431
428,429
428,430
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725,726
726,727
727,728
728,729
729,730
730,731
731,732
732,733
733,734
734,735
735,736
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737,738
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739,740
740,741
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790,791
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829,830
830,831
831,832
832,833
833,834
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838,839
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840,841
841,842
842,843
843,844
844,845
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846,847
847,848
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850,851
851,852
852,853
853,854
854,855
855,856
856,857
857,858
858,859
859,860
860,861
861,862
862,863
863,864
864,865
865,866
866,867
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870,871
871,872
872,873
873,874
874,875
875,876
876,877
877,878
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880,881
881,882
882,883
883,884
884,885
885,886
886,887
887,888
888,889
889,890
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891,892
892,893
893,894
894,895
895,896
896,897
897,898
898,899
899,900
900,901
901,902
902,903
903,904
904,905
905,906
906,907
907,908
908,909
909,910
910,911
911,912
912,913
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914,915
915,916
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918,919
919,920
920,921
921,922
922,923
923,924
924,925
925,926
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927,928
928,929
929,930
930,931
931,932
932,933
933,934
934,935
935,936
936,937
937,938
938,939
939,940
940,941
941,942
942,943
943,944
944,945
945,946
946,947
947,948
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949,950
950,951
951,952
952,953
953,954
954,955
955,956
956,957
957,958
958,959
959,960
960,961
961,962
962,963
963,964
964,965
965,966
966,967
967,968
968,969
969,970
970,971
971,972
972,973
973,974
974,975
975,976
976,977
977,978
978,979
979,980
980,981
981,982
982,983
983,984
984,985
985,986
986,987
987,988
988,989
989,990
990,991
991,992
992,993
993,994
994,995
995,996
996,997
997,998
998,999
999,1000
1000,1
