orco orde ordo ordu ore- oreb orec ored oreo orer ori- oric orid orie orio orit oro- oroe oror orot orri orro ortc orte orto orub otbd otcd oted otee oter otic otit oto- otoe otoo otor otre otro otte otti otto ottu otur oucc oudc oude oued ouer ouie ouii ouir ouit our- oure ouro ourt out- outb oute outi outo ouu- rbbb rbbr rcbc rcbo rccb rccc rcdc rcde rcet rcic rcid rcrd rctc rcti rder rdio rdoc rebb rebe rebo rebu recc recd rece reci recr rect recu redc redd rede redi redo redr redu reeb reed reet reid reii reir reit reiu reod reot reou rerd rere reri rero rert reru retd rete reti reto retr rett reue reut reuu rib- ribe ribo ribu ricc rice rico rict ridc ridd ride ridi rido ried rier riet rieu riot riou rire riri rite riti rito ritt ritu riue rob- robb robe robi robo robt robu rocc roce roco rodd rode rodi rodo roed roer roet roid roio roir roit roiu roob rood rooi roor root rorc rore rori roro rort roru rotc rote roti roto rotr rott roub roud roue rout rred rrrr rtcc rtce rtdt rtee rtei rubb rube rubi rubu ruce ruci ruct rudd rude rudi rudo rued ruer ruet ruid ruit rurc rurd rure ruri ruro ruru rute ruti ruto rutt rutu ruud tbcb tbcc tbcd tbce tbit tbrb tccc tccu tcdd tctc tddb tdor tdri tebo tebu teco tecr tect tedd tede tedi teec teed teer teet teic teie teir teiu teor ter- terc tere teri tero terr teru tete teti teto tetr tett tetu teut tibi tibu ticc tice tico tidc tidd tide tie- tied tiee tiei tieo tier tiet tiit tiiu tiou tirb tird tire tiri tiro tirr tiru titc tite titi tito titt titu tobe tobi tobo tobt tobu toce toci toco todd tode todi todo todt todu toed toee toei toer toet toid toie toit tood toor toot torc tord tore tori toro torr tort toru totc totd tote toti toto totr tott toui tour tout trcc tre- trec tred tree trei treo tret treu tri- trib tric trie trio trit troc trod troe troi troo trot trou trtc trte trtr trub truc trud true trut truu ttbb tteo tter ttoe tttt tubb tube tubo tubr tubu tucc tuco tude tudi tudu tuei tuer tuet tuit tuiu tuor turb turc turd ture turi turo turr turt turu tute tuti tuto tutt tutu tuuo u-ie ubbe ubbi ubbo uber ubet ubic ubid ubii ubir ubit uboc ubod ubud ucbc ucci ucdc ucdd ucio ucrc ucut udbc uddi uder udet udic udid udir udoo udot ueir uirr uocc uor- uore urbe urbi urci urde urdu ure- ured uret urib uric urie uriu uro- uroo urre urri urte urur urut utec uter utid utor utri utti utto uttu uuoc uuri uuuu