f2n1fi e2n1f d2n1 c2n1fi b2n1f

qbn1f pbn1 obn1fi nbn1f mbn1

1km1 0km1fi zkm1f ykm1 xkm1fi

cul1fi bul1f aul1 9tl1fi 8tl1f

n3k1f m3k1 l3k1fi k3k1f j3k1