qua[12], cab[8], duc[6], aba[5], bad[5], abi[5], bai[5], bau[5], dad[3], dia[3], aua[3], dau[3],
qi[11], ab[4], bi[4], aa[2], ad[2], da[2], ai[2], au[2], du[2], ud[2], ui[2],
