About ten heuristics results of 7,571
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42:55
32:40
27:04
30:56
52:25
34:31
39:51
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19:11
30:37
30:51
23:53
27:55
33:14
61:19
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25:22
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33:27
24:37
26:44
20:09
27:04
27:26
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22:18
34:37
25:32
22:27
60:33
26:48
91:53
143:55
164:09
131:36
375:23
56:47