u4n2n2 t4n2n s4n2 r4n2n2 q4n2n
5dn2n 4dn2 3dn2n2 2dn2n 1dn2
gnm2 fnm2n2 enm2n dnm2 cnm2n2
rwl2n2 qwl2n pwl2 owl2n2 nwl2n
25k2n 15k2 05k2n2 z5k2n y5k2