au81 bu81b cu81bx du81 eu81b

zk91b 0k91bx 1k91 2k91b 3k91bx

oba2bx pba2 qba2b rba2bx sba2

d2a2 e2a2b f2a2bx g2a2 h2a2b

2sb2b 3sb2bx 4sb2 5sb2b 6sb2bx