hof[8], feh[7], koi[7], fei[6], kid[6], hoi[5], hei[4], hie[4], deo[4], ode[4], ido[4], iod[4], oie[4], die[3], eid[3],
ho[4], oh[4], eh[3], he[3], hi[3], do[3], od[3], ei[2],
