rabah raban rabba rabda rabha rabon rabor rabou rabud rabun radan radar radau radha radon radun rahab rahan rahna rahon ran-d ranau randa randb randd rando randr randu ranho ranna ranno rannu ranon ranua raron rauda rauna rauno rauon rhabd rhaon rharb rhod- rhoda rhodo rhona rhoon ro-ro roadb roana roann robab robar robbo robo- robon robor robun robur rodan rodau rodbo rodda rodna rodon rodor rohan rohob rohod rohru rohun ronan ronda rondo ronno rooah rooba roodu roond rorbu rorra rouba round roura rrand ruaha ruana ruano rubab ruban rubba rubon rubor rubra rudan rudar rudha rudna rudno rudra ruhab ruhnu ruhub runan runda rundu runo- runon ruran u-dub uanda uandd uarda uaroo ubahn ubobo udaan udana udand udara udhao udhar udora uh-oh uh-uh uhdoh uhhoh uhhuh uhura uhuru unadd unadu unara unaru unbad unban unbar unbud undub undun undur unhad unnao unnau unnun unnur unona unoor unorn unrar unrra unruh unrun unurn uraan uraba uran- urana urano urban urbar urhan uroob urour urrao uruan urubu uuand uuard uurad uuuuu