biec[7], bied[7], deck[7], beki[7], ciec[6], cedi[6], ceik[6], ceki[6], ciek[6], icek[6], kice[6], deki[6],
bid[6], bek[6], cek[5], dek[5], kic[5], cie[4], kei[4], kie[4],
be[4], bi[4], ce[3], de[3], ci[3], id[3], ki[3],
