rido ried rier rieu rige rigg righ rigi rigo rigu riho riou rire riri riue rob- robb robe robi robo robu rodd rode rodi rodo roed roeg roer roge rogg rogh rogi rogo rohe rohr rohu roid roig roio roir roiu roob rood roog rooi roor rore rori roro roru roub roud roue rouh rred rrrr rubb rube rubi rubu rudd rude rudi rudo rued ruer ruge rugg rugh rugi ruhe ruhh ruhi ruhr ruid rurd rure ruri ruro ruru ruud u-ie ubbe ubbi ubbo uber ubid ubii ubir ubod ubud uddi uder udgb udge udid udig udir udoh udoo ueir ugeo uggo ughe ughi ugod ugri ugro ugur uguu uh-d uhde uher uhid uhoh uhuh uige uirr uor- uore urbe urbi urde urdu ure- ured ureh urge urgh urgi urgu urho urib urie uriu uro- uroo urre urrh urri urur uuri uuuu