erhu[8], hiwu[8], hewr[6], eruw[6], wiru[6], rwie[4],
her[5], rui[5], hiw[5], rei[3], wie[3], rew[3], wre[3], wir[3],
hu[6], eh[4], he[4], hi[4], wu[4], er[2], re[2], ew[2], we[2], iw[2],
