firm[9], furt[7], ruft[7], turf[7], murt[6], trum[6], turm[6],
vif[11], fit[6], ruf[6], mir[5], mit[5], mur[5], rum[5], mut[5],
im[4], mi[4], um[4], ti[2], ui[2], ur[2], tu[2],
