idowi[6], widio[6], doiwo[6], wdowi[6], wdowo[6],
ooid[5], diwo[5], doiw[5], dwoi[5], wodo[5],
doi[4], ido[4], odo[4], diw[4], wid[4], wii[3], iwo[3], owi[3], wio[3], owo[3], wow[3],
id[3], do[3], od[3], ii[2], iw[2],
