0		 a
1		 a
a
2		 a
a
c
3		 a
a
c
c
4		 a
a
c
c
a
5		 a
a
c
c
a
b
6		 a
a
c
c
a
b
a
7		 a
a
c
c
a
b
a
b
8
0
 T T T T T T T T T
1
a		 . T T T T T T T T
2
ac		 . . . T T T T T T
3
acb		 . . . . . . T T T
4
acba		 . . . . . . . T T