bund[6], bunt[6], brut[6], trub[6], butt[6], rund[4], turn[4], dutt[4], tunt[4],
dun[3], und[3], dur[3], nur[3], run[3], nut[3], tun[3], tut[3],
du[2], ud[2], nu[2], ur[2], tu[2],
