rotnp1 qotnp potn ootnp1 notnp

2xsnp 1xsn 0xsnp1 zxsnp yxsn

d7rn c7rnp1 b7rnp a7rn 96rnp1

ogrnp1 ngrnp mgrn lgrnp1 kgrnp

zpqnp ypqn xpqnp1 wpqnp vpqn