7t1b 8t1be 9t1bev au1b bu1be

wk2be xk2bev yk2b zk2be 0k2bev

lb3bev mb3b nb3be ob3bev pb3b

a23b b23be c23bev d23b e23be

zs4be 0s4bev 1s4b 2s4be 3s4bev