ufo[7], fei[6], abo[6], boa[6], beo[6], bio[6], obi[6], auf[6], abi[5], bai[5], bei[5], bau[5], oie[4], eia[3], aue[3],
fa[5], ob[5], ab[4], bi[4], ai[2], ei[2], au[2], ui[2],
