drude[5],
drei[4], ried[4], drud[4], urdu[4],
die[3], eid[3], der[3], erd[3], red[3], dir[3], ire[3], dur[3], reu[3], ure[3],
ei[2], er[2], re[2], du[2], ud[2], ui[2], ur[2],
