j7pr k7pr1 l7pr18 m7pr n7pr1
8xqr1 9xqr18 ayqr byqr1 cyqr18
xorr18 yorr zorr1 0orr18 1orr
mfsr nfsr1 ofsr18 pfsr qfsr1
b6sr1 c6sr18 d6sr e6sr1 f6sr18