rjrnrn qjrnr pjrn ojrnrn njrnr
2sqnr 1sqn 0sqnrn zsqnr ysqn
d2pn c2pnrn b2pnr a2pn 91pnrn
obpnrn nbpnr mbpn lbpnrn kbpnr
zkonr ykon xkonrn wkonr vkon