a-fu aaaa aaaf aaar aafa aaff aaoo aara aaro aart aaru aata aatf aatt afaa afao afar afat affa affo afft afoa afoo afor afr- afra afro afru afta afua aora aort aotf aouf aout araf arar arat arau arfa arff arft arfu aroa aroo aror arr- arra arro arrr arrt arru arta arto artr arua arut at-t ataa atar atat atof ator atot atra atro atru atta atto attr attu atua atur auaa aur- aura auro aut- auto faaa fafa faff fafo fara faro farr fart faru fata fatf fato fatt faur faut ffar ffff ffrr fftf foaf foar fofo foof foot for- fora foro forr fort fota foto fott foua four fout frat frau frot frou frta fuar fuat fuff fufu fuor fur- fura furo furr furt futa futo futu oaau oafo oara off- offa offo offr offu ofor ofra ofta ooaa ooff oooo oora oort orao orar orat orff orfu oro- orof oror orot orra orro orta orto otar oto- otof otoo otor otra otro otta otto ottu otur ouat ouff our- oura ouro ourt out- outa outo ouu- raaf raat rafa raff raft rara rarf raro rata ratf rato ratt ratu raua rauf raut roaf roar roat roff rofo roof roor root rora roro rort roru rota roto rotr rott roua rouf rout rrat rrrr rufa ruff rufo ruft rura ruro ruru ruta ruto rutt rutu taa- taaf taar taat tafa taff tafo taft taoa taor taou tara tarf taro tarr tart taru tata tato tatr tatt tatu taua taur taut tfot toat toau tofa toff tofo toft tofu tooa toof toor toot tora torf toro torr tort toru tota toto totr tott tour tout traa traf trao trat trau trfr troa troo trot trou trra trtr trut truu ttfa ttff tttt tuao tuar tuat tufa tuff tufo tuft tufu tuor tura turf turo turr turt turu tuta tuto tutt tutu tuuo uafa uart uaru uata uatu uaua uffa ufra uofa uofo uor- urao urat urau urfa urff urft uro- uroa uroo urra urur urut utau utfo utor utto uttu uuta uutf uuuu