frust[8], rufst[8], surft[8], turfs[8], futur[8], sutur[5],
rufs[7], surf[7], furt[7], ruft[7], turf[7], cuts[7], stuf[7], stur[4], surt[4], urst[4],
ruf[6], cut[6], rus[3], sur[3], urs[3],
st[2], ur[2], tu[2],
