icru icta icub ihab ihba ihcc ihit ihob ihra ihrc ihtc ihua ihub ihuo iiac iica iiht iiii iiio iiit iioi iioo iira iirc iita iitr iitt iiuc ioba iobi ioci ioii ioio ioit iooi iooo iora iori iota ioto irac irai irao irar irca ircc ircu iri- iria iric irio irob iroc iroh irra irrc irri irta irti itaa itac itai itar itat itch itha ithc itia itic itoh itoi itoo itor itou itra itri itta itto itur iucc iuiu iura oaau oahu oaic oara oath obai obba obbo obia obit oboi obor obot obra obrh obri obro obuh ocab ocac ocat ocbc occa occc occi occt ocha ochi ocht ocra ocro ocrr oct- octa octi octo ocur ohai ohau ohba ohcc ohhi ohho ohia ohio ohob ohoh ohra ohta ohto ohtu oiba oici oiii oira oirt oita oitc oiti ooaa ooba oobi oocr ooha ooho ooia oooh oooo oora oort ootb orab orac orah orai orao orar orat orba orbb orbi orbo orbu orca orch orci orco ori- oria oric orio orit oro- oror orot orra orri orro orta ortc orth orto orub otac otar otha otho othr otic otit oto- otoh otoo otor otra otro otta otti otto ottu otur ouac ouat oucc ouch ouii ouir ouit our- oura ouro ourt out- outa outb outh outi outo ouu- raab raat raba rabb rabi rabo rabu rac- raca racc rach raci raco ract racu raha rahi rahr raht rahu raia raic raii rair rait raiu raob raoc raoh rara rarb rari raro rata rath rati rato ratt ratu raua raub rauc raut rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rcic rctc rcti rhau rhib rhio rhoa rhob rhoc rhoh riaa riab riah riai riat riau rib- riba ribo ribu rica ricc rich rico rict riha riho riht riia riot riou riri rita rith riti rito ritt ritu roab roar roat rob- roba robb robi robo robt robu roca rocc roch roco roha rohr rohu roia roio roir roit roiu roob rooi roor root rora rorc rori roro rort roru rota rotc roth roti roto rotr rott roua roub rouh rout rrah rrat rrrr rtai rtca rtcc ruah ruba rubb rubi rubu ruca ruch ruci ruct ruhh ruhi ruhr ruit rura rurc ruri ruro ruru ruta ruth ruti ruto rutt rutu taa- taar taat taba tabb tabc tabi tabo tabu taca tacc tach taci taco tact taha tahi taho tahr tahu taia taio tair tait taoa taor taou tara tarb tarc tari taro tarr tart taru tata tatb tath tati tato tatr tatt tatu taua taub tauc taur taut tbar tbca tbcb tbcc tbit tbrb tbta tcca tccc tccu tch- tcha tchh tchi tcho tchr tchu tctc thaa thai thao thar that thau thca thch thi- thia thic thio thir thoo thor thot thou thra thri thro thru thtb thtr thur tiaa tiab tiao tiar tiba tibi tibu tica ticc tich tico tiht tihu tiit tiiu tiou tira tirb tiri tiro tirr tiru tita titc tith titi tito titt titu toab toat toau toba tobi tobo tobt tobu toca toch toci toco tohi toho tohu toit tooa tooh toor toot tora torc tori toro torr tort toru tota totc toth toti toto totr tott touh toui tour tout traa trab trac trai trao trat trau trca trcc tri- tria trib tric trio trit troa troc troi troo trot trou trra trtc trtr trub truc trut truu ttab ttbb tttt tuao tuar tuat tuba tubb tubo tubr tubu tuca tucc tuch tuco tuht tuhu tuit tuiu tuor tura turb turc turi turo turr turt turu tuta tuti tuto tutt tutu tuuo uabc uaca uair uaoc uarc uart uaru uata uath uatu uaua ubac ubar ubba ubbi ubbo ubic ubii ubir ubit uboc ubra ucai ucar ucat ucbc ucca ucci ucha uchi ucho ucio ucrc ucua ucut uhoh uhta uhti uhuh uica uira uirr uocc uor- urac urai urao urat urau urba urbi urca urch urci urho uria urib uric uriu uro- uroa uroo urra urrh urri urth urur urut utac utah utai utau utha utia utor utri utti utto uttu uuoc uuri uuta uuuu