big[7], gib[7], ghi[7], aga[5], aha[5], bai[5], agi[5], gai[5], hai[5], abo[5], boa[5], oba[5], ago[5], hao[5], boi[5], obi[5], goi[5], ogi[5], hoi[5],
ba[4], ag[4], ha[4], bi[4], hi[4], bo[4], go[4], ho[4], oh[4], aa[2],