From: Ranking and compacting binding segments of protein families using aligned pattern clusters
pi\c j
( c 1 c 2 c 3 c 4 c 5 c 6 ) 1 × 6
p 1 p 2 p 3 p 4 p 5 p 6 6 × 1
=
B E L L O W M E L L O W H E L L O * B A L L S * B A L K S * H A L - S * 6 × 6