About symmetry results of 231
02:31
02:03
01:44
03:05
07:45
06:26
08:14
04:04
13:14
05:22
12:38
06:00
10:36
05:02
05:37
23:38
14:44
02:06
04:33
05:11
11:52
11:13
04:30
01:58
03:29
09:48
02:21
02:33
05:28
08:09
22:11
10:19
02:01
05:47
14:12
07:37
06:13
02:26
06:54
10:26
06:13
10:26
10:58
16:10
04:08
03:12