burg[7], grub[7], bugs[7], buhs[7], hubs[7], wuhr[7], grus[5], rhus[5], guss[5], huss[5], russ[4],
bug[6], buh[6], hub[6], bus[5], gur[4], hur[4], ruh[4], uhr[4], rus[3], sur[3], urs[3],
hu[3], uh[3], ur[2],
