bigo[8], bogi[8], bido[7], dogi[7], biot[7], bito[7], togi[7], bitw[7], diwo[5], doiw[5], dwoi[5], twoi[5], wito[5],
big[7], gib[7], bid[6], gid[6], bod[6], dog[6], bit[6], git[6], bot[6], tog[6], boi[5], obi[5], goi[5], ogi[5], dit[5], wig[5], doi[4], ido[4], toi[4], diw[4], wid[4], iwo[3], owi[3], wio[3],
bi[4], bo[4], go[4], id[3], do[3], od[3], ot[3], to[3], iw[2],
