t1a2m s1a2 r1a2mn q1a2m p1a2
4aa2 3aa2mn 2aa2m 1aa2 0aa2mn
fk91mn ek91m dk91 ck91mn bk91m
qt81m pt81 ot81mn nt81m mt81
1271 0271mn z271m y271 x271mn