orde ordo ordu ore- oreb orec ored oreg orel oreo orer orge orgo orle orlo orlu oro- oroe oror orro orub oucc oudc oude oued ouer ouge ould oule oulu our- oure ouro ouu- rbbb rbbr rbcl rble rcbc rcbo rccb rccc rcdc rcde rcgc rcle rcrd rcrg rder rdoc rebb rebe rebo rebu recc recd rece recr recu redc redd rede redl redo redr redu reeb reed reel regd rege regl rego regr regu relb reld rele rell relo reod reog reol reou rerd rere rerg rero reru reue reul reuu rgbe rlcg rlee rleu rlug rob- robb robe robo robu rocc roce roco rodd rode rodo roed roeg roel roer roge rogg rogo rold role roll rolo roob rood roog rool roor rorc rore roro roru roub roud roue roul rred rrle rrrr rubb rube rubu ruce rudd rude rudl rudo rued ruel ruer ruge rugg rule rull rulo rurc rurd rure ruro ruru ruud ubbe ubbo uber uble ublo uboc ubod ubud ucbc ucdc ucdd ucel ucrc udbc udel uder udgb udge udoo uele uell ugcc ugcg ugeo uggo ugod ugol ugro ugur uguu ulbc ulcc ulco ulde uleb ulee uleo ulle ullo ullr ulo- uloc ulog ulul uocc uolc uor- uore urbe urde urdu ure- ured urge urgu urle uro- urol uroo urre urur uulu uuoc uuuu