7,15,4,16
9,11,14,12,1
3,9,5,(11,14,13)
3,4
回避
4,5,2,(9)
11,14,1,9,(8,15,7,13)
12,10,2,5,(6,8)
9,8,3,(4,6,7)
1,11,4,(6)
14,9,16,11,(6,1)