ylq2 xlq2pb wlq2p vlq2 ulq2pb
9up2pb 8up2p 7up2 6up2pb 5up2p
k4o2p j4o2 i4o2pb h4o2p g4o2
vdo2 udo2pb tdo2p sdo2 rdo2pb
6mn2pb 5mn2p 4mn2 3mn2pb 2mn2p