这个有120种,以1、2、3、4、5分别开头的每个都对应24组数,分别如下：
12345,12354,12435,12453,12534,12543；
13245,13254,13425,13452,13524,13542；
14235,14253,14325,14352,14523,14532；
15234,15243,15324,15342,15423,15432；
21345,21354,21435,21453,21534,21543；
23145,23154,23415,23451,23514,23541；
24135,24153,24315,24351,24513,24531；
25134,25143,25314,25341,25413,25431；
31245,31254,31425,31452,31524,31542；
32145,32154,32415,32451,32514,32541；
34125,34152,34215,34251,34512,34521；
35124,35142,35214,35241,35412,35421；
41235,41253,41325,41352,41523,41532；
42135,42153,42315,42351,42513,42531；
43125,43152,43215,43251,43512,43521；
45123,45132,45213,45231,45312,45321；
51234,51243,51324,51342,51423,51432；
52134,52143,52314,52341,52413,52431；
53124,53142,53214,53241,53412,53421；
54123,54132,54213,54231,54312,54321；