横向差值为9 7 5 3 竖向差值相等且被减数和减数都增大
11-2 11-4 11-6 11-8
12-3 13-6 12-7 13-10
13-4 14-7 13-8 15-12
14-5 15-8 14-9 16-13
15-6 16-9 15-10 17-14
XXX XXX XXXX 12-9
13-4 14-7 13-8 13-10
XXX XXX XXX 14-11
15-6 16-9 15-10 15-12