kopko[8], opoko[7], kokos[7], kokso[7], pokos[7], posok[7], sopko[7], spoko[7], osoko[6],
koko[6], kopo[6], okop[6], opok[6], koks[6], skok[6], skop[6], koso[5], osok[5], opos[5], ospo[5],
kok[5], kop[5], oko[4], kos[4], sok[4], osp[4], oso[3],
ko[3], ok[3], op[3], po[3], os[2],
