burg[7], grub[7], bund[6], dung[5], drud[4], rund[4],
bug[6], zug[6], duz[5], zur[5], gnu[4], gur[4], dun[3], und[3], dur[3], nur[3], run[3],
uz[4], zu[4], du[2], ud[2], nu[2], ur[2],