riexrv qiexr piex oiexrv niexr

2rdxr 1rdx 0rdxrv zrdxr yrdx

d1cx c1cxrv b1cxr a1cx 90cxrv

oacxrv nacxr macx lacxrv kacxr

zjbxr yjbx xjbxrv wjbxr vjbx