inii[4], inio[4], iwin[4], wini[4], niwo[4], nowi[4], wino[4], woni[4],
iii[3], ino[3], oni[3], wii[3], niw[3], win[3], iwo[3], owi[3], wio[3], won[3],
ii[2], in[2], ni[2], no[2], on[2], iw[2],
