frug[8], fund[7], burg[7], grub[7], bund[6], dung[5], guru[5], rund[4], urdu[4],
fug[7], bug[6], fun[6], ruf[6], gnu[4], gur[4], dun[3], und[3], dur[3], nur[3], run[3],
du[2], ud[2], nu[2], ur[2],
