bub, bubb, chubb, cub, drub, dub, grub, grubb, hub, jubb, nub, pub, raab, raabe, rab, rabb, rabe, raub, reeb, rib, riebe, rob, robb, robbe, robe, rough, rubbed, rube, rubs, ruch, ruck, rud, rudd, rudge, rueb, ruf, ruff, rug, rugg, ruhl, rum, run, rung, rupp, ruppe, rus, rusch, rusche, rush, russ, russe, rut, rutt, shrub, sub, tub, tubb, wruck, wrung