okro okto okul okur olcc olic olio olit olki olli ollo olof olor olot oltu olur oocr ooff ooku oolo oooo oort orci orco orff orfi orfu ori- oric orif oril orio orit orko orlo orlu oro- orof orok oror orot orri orro ortc orto otcl otfc otic otif otit oto- otof otok otoo otor otro otti otto ottu otur oucc oufc ouff ouii ouir ouit oulk oulu our- ouro ourt out- outi outo ouu- rccc rcfc rcic rctc rcti rffc rffl rfic rftc ricc rick rico rict riff rift rifu riif riki rikk riku rill rilo rilu riol riot riou riri riti ritl rito ritt ritu rkkf rlif rocc rock roco rofc roff rofl rofo roif roik roil roio roir roit roiu roki rokk roko rokr roku rolf rolk roll rolo rolt roof rooi rook rool roor root rorc rori rork roro rort roru rotc roti rotk rotl roto rotr rott rouf rouk roul rout rrfc rrif rrrr rtcc rtfc rtlt ruci ruck ruct rufc ruff rufo ruft ruif ruit ruki rukk ruku rulk rull rulo ruok rurc ruri ruro ruru ruti rutl ruto rutt rutu tccc tccu tcfc tctc tcul tfcu tfot tftc ticc tick tico tiff tifo tift tiit tiiu tiki tiko tiku till tilo tilr tilt tiou tiri tirl tiro tirr tiru titc titi tito titt titu tkof tkol tlco tlik tlli toci tock toco toff tofi tofo toft tofu toil toit toki toko toku tol- toli tolk toll tolo tolt tolu toof took tool toor toot torc torf tori tork toro torr tort toru totc toti toto totr tott toui touk toul tour tout trcc trcl trfc trfr tri- tric trif trik tril trio trit troc troi troo trot trou trtc trtr truc truk trut truu ttfc ttff tttt ttul tucc tuck tuco tufc tuff tufi tufo tuft tufu tuik tuil tuit tuiu tuko tuli tulk tull tulo tulu tuor turc turf turi turk turo turr turt turu tuti tutl tuto tutt tutu tuuo ucci ucil ucio ucrc ucut ufcu ufuk uirr ukcc ukko ukok ukrc ukur ulcc ulco ulft ulic ulik ulli ullo ullr ulo- uloc ulti ulto ultt uluk ulul uocc uofl uofo uolc uor- urci urff urfi urft uric urif urik uriu uro- urok urol uroo urri uruk urur urut utfo utik util utor utri utti utto uttu uulu uuoc uuri uutf uuuu