type	day
a	2
a	4
a	3
a	2
a	4
a	7
a	7
a	2
a	5
a	4
b	5
b	6
b	8
b	5
b	10
b	7
b	12
b	6
b	6
c	7
c	11
c	6
c	6
c	7
c	9
c	5
c	10
c	6
c	3
c	1