ri1frm qi1fr pi1f oi1frm ni1fr

2r0fr 1r0f 0r0frm zr0fr yr0f

d1zf c1zfrm b1zfr a1zf 90zfrm

oazfrm nazfr mazf lazfrm kazfr

zjyfr yjyf xjyfrm wjyfr vjyf