dddd ddot dfdt dfrf dfri dftr didi dido dif- diff diii dimi dimm dimo dior diot dird dirr dirt diti dito ditt dmdt dmft dmtf dod- dodd dodi dodo doff doid doit domi domm domo dood doof doom door doot dord dorf dori dorm doro dorr dort dotd doti doto dott drif drit drod drof drom drot dtor dtot fdom fdot fdti ffff ffii ffrr fftf fidf fido fiff fifi fifm fifo fift fiii fimo fimr fior firm fiti fitt fmod fmri fofo foid fomo fomt food foof foom foot for- ford fori form foro forr fort foti fotm foto fott frid frim frio frit from frot ftdi ftii iddm iddo idid idio idir idrf idro ifid ifim ifit ifor ifrf ifri ifto iiii iiio iiit iioi iioo iitm iitr iitt imdi imdt imfi imid imir imit immi immo immt imod imof imri imro imrr imto iod- iodd iodo ioii ioio ioit iomo ioof iooi iooo iori iotf ioto irdo irfm iri- irid irio irmo irod irri irtf irti itdo itif itim itmo itof itoi itoo itor itrf itri ittf itto mddm mdfi mdii mdmf mdot mfor mfri mftf mid- midi mido miff mifi miii miio miit mim- mimd mimi mimo mio- mird miri miro mirr mirt mit- miti mitm mito mitt mmdf mmdi mmfd mmff mmii mmmd mmmm mmod mmor mmrf modd modi modo moff mofo moif moii moio moir moit momi momo mood moor moot mord morf mori moro mort motd moti motm moto mott mrdd mrmd mrtm mrtt mtff mtom mtor mtrr mttr oddd oddi odio odir odmr odom odoo odor odot ofdr off- offo offr ofid ofit ofor oido oiii oirt oiti omid omim omio omit omo- omoi omoo omor omri omro oodi ooff ooid oooo oord oort ordo orff orfi ori- orid orif orio orit ormo oro- orof orom oror orot orri orro orto otif otit oto- otof otoo otor otro otti otto rdio rfdi rfid ridd ridi rido riff rift riif rimi rimm rimo riom riot riri riti rito ritt rmif rodd rodi rodo roff rofo roid roif roio roir roit romd romi romm romo rood roof rooi room roor root rori roro rort roti roto rotr rott rrif rrrr rtdt rtfm rtmi t-mo tdff tdmi tdor tdri tfot tidd tiff tifo tift tiit timi timm timo tird tiri tiro tirr titi tito titt tmro tmtt todd todi todo todt toff tofi tofo toft toid toit tomi tomm tomo tomt tood toof toom toor toot tord torf tori torm toro torr tort totd toti totm toto totr tott trfd trfm trfr tri- trif trim trio trit trmd trmi trod troi trom troo trot trtr ttff ttim tttt