bici[7], bitw[7], ibis[6], cist[6], cisi[5], wici[5], sitw[5], wist[5], siwi[4], wisi[4],
bit[6], bis[5], cis[4], sic[4], sit[4], wic[4], wii[3], siw[3], wis[3], wsi[3],
bi[4], ci[3], ts[3], ii[2], si[2], iw[2],
