kobo[7], obok[7], boot[7], kobz[7], koto[6], otok[6], toto[6], kozo[5],
bok[6], bot[6], kot[5], kto[5], tok[5], oko[4], oto[4], zoo[3],
bo[4], ko[3], ok[3], ot[3], to[3], oz[2],
