orgul orlec oroco orodo oroer orold orolu orrgo oruce oruro ouder ouedo ougle ouled oullo ouoro ource ourde oure- ourol r-co- rcled rcolo rdllr recce recco reced recog recue recur redco redde redel reder redlo redoc redor redug redur reece reede reefe reege reere refco refed refel refer reffe reffo regec regel reger regge reggo regle regul regur reled relee rello relog relue reord reorg rerde rere- reree reuel reuer reule ro-ro rocco rocor rocou rodde roded rodef rodel rodeo roder rodge rodl rodoc rodor roell roero rofel roffe rofor roger rogge rogue rolde roled roleo rolfe rolfo rollc rolle rollo roode roodu rooer roofe rooge roole roore rooue rorer roude rouer roufe rouge roule roull roure rucer rucul rudel ruder rudge rudle ruede ruegg ruele ruell ruere ruffe ruffo rufo- rufol ruger rugge ruled ruler rullo rurde rurec ruule u-cee u-god uccel uccle ucell ucero uclue ucode uddel udder udege udell udged udler udol udoll uelfe ufere ufofu uggle ugoff ugro- ugrug ulcer ulger ulguc ullur ululu uluru uouee urcel urdee urdog uredo urelu ureo- urged urgel urger urled urour uruce urucu uuuuu