A A B B C C D D E E = 2
A A X X Y Y Z Z B B = 2
F F G G H H I I J J = 2
K K L L M M N N O O = 4
P P Q Q R R S S T T = 2
U U V V W W X X Y Y = 1
D D * * * * * * E E = 1
* * X X * * * * Y Y = 1
* * * * Y Y Z Z * * = 0
F F * * G G * * * * = 0
B B * * C C * * * * = 0
K K * * L L * * * * = 0
A E X K O O M M N N = 7
* * * * M M * * N N = 3
P P * * Q Q * * * * = 0