8
01 1,2
02 1,2,3,5
12 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17
12 23
05 3,
03 1,2,3,4,5,6,7,8,9,10,11,12
11 1,2,3
11 5,6
