"c"	"d"	"e"	"f"
1	9	M	5.0
2	8	e2	6.0
3	7	F	7.0
4	6	M	8.0
5	5	M	9.0
6	4	F	10.0
7	3	F	11.0
8	2	F	12.0
9	1	F	15.0