ospom[7], mosso[6], sosom[6], posso[6],
mopo[6], opom[6], mops[6], psom[6], spom[6], osom[5], somo[5], opos[5], ospo[5], poss[5],
mop[5], omo[4], osm[4], som[4], osp[4], pss[4], oso[3], sos[3],
om[3], op[3], po[3], os[2],
