cob[6], bok[6], kog[6], bot[6], tog[6], koc[5], bor[5], rob[5], gro[5], ogr[5], kot[5], kto[5], tok[5], kor[4], kro[4], okr[4], ork[4], rok[4], ort[4], rot[4], tor[4],
bo[4], go[4], co[3], ko[3], ok[3], ot[3], to[3], or[2], ro[2],