konno[6], koron[6], norko[6], knorr[6], norno[5],
okno[5], kron[5], koro[5], okro[5], orko[5], nono[4], norn[4], noro[4],
nok[4], oko[4], kor[4], kro[4], okr[4], ork[4], rok[4], non[3], ono[3], nor[3], oro[3],
ko[3], ok[3], no[2], on[2], or[2], ro[2],
