doin[5], doni[5], donn[5], inii[4], inni[4], inio[4],
dni[4], ind[4], doi[4], ido[4], dno[4], don[4], iii[3], ino[3], oni[3], non[3],
id[3], do[3], od[3], ii[2], in[2], ni[2], no[2], on[2],
