ostwi[6], sitwo[6],
sito[5], stoi[5], twoi[5], wito[5], sitw[5], wist[5], siwi[4], wisi[4], siwo[4], sowi[4], swoi[4], wsio[4],
toi[4], sit[4], sto[4], osi[3], sio[3], soi[3], wii[3], iwo[3], owi[3], wio[3], siw[3], wis[3], wsi[3],
ot[3], to[3], ts[3], ii[2], si[2], os[2], iw[2],
