2rzt2 1rzt 0rzt21 zrzt2 yrzt

d1yt c1yt21 b1yt2 a1yt 90yt21

oayt21 nayt2 mayt layt21 kayt2

zjxt2 yjxt xjxt21 wjxt2 vjxt

atwt 9swt21 8swt2 7swt 6swt21