dddd ddot didi dido didu diii dior diot diou dird dirr dirt diti dito ditt dod- dodd dodi dodo doid doit dood door doot dord dori doro dorr dort doru dotd doti doto dott doud dour dout drit drod drot drou drui drut druu dtor dtot dudd dudo dudu duid duir duit duo- duri duro durt duru duur duut iddo idid idio idir idro iduo iiii iiio iiit iioi iioo iitr iitt iod- iodd iodo ioii ioio ioit iooi iooo iori ioto irdo iri- irid irio irod irri irti itdo itoi itoo itor itou itri itto itur iuiu oddd oddi odio odir odiu odoo odor odot odou odtu odur oido oiii oirt oiti oodi ooid oooo oord oort ordo ordu ori- orid orio orit oro- oror orot orri orro orto otit oto- otoo otor otro otti otto ottu otur ouii ouir ouit our- ouro ourt out- outi outo ouu- rdio ridd ridi rido riot riou riri riti rito ritt ritu rodd rodi rodo roid roio roir roit roiu rood rooi roor root rori roro rort roru roti roto rotr rott roud rout rrrr rtdt rudd rudi rudo ruid ruit rurd ruri ruro ruru ruti ruto rutt rutu ruud tdor tdri tidd tiit tiiu tiou tird tiri tiro tirr tiru titi tito titt titu todd todi todo todt todu toid toit tood toor toot tord tori toro torr tort toru totd toti toto totr tott toui tour tout tri- trio trit trod troi troo trot trou trtr trud trut truu tttt tudi tudu tuit tuiu tuor turd turi turo turr turt turu tuti tuto tutt tutu tuuo uddi udid udir udoo udot uirr uor- urdu uriu uro- uroo urri urur urut utid utor utri utti utto uttu uuri uuuu