dddd dfrf dfri didi dido dif- diff diii dimi dimm dimo dior dird dirr dod- dodd dodi dodo doff doid domi domm domo dood doof doom door dord dorf dori dorm doro dorr drif drod drof drom fdom ffff ffii ffrr fidf fido fiff fifi fifm fifo fiii fimo fimr fior firm fmod fmri fofo foid fomo food foof foom for- ford fori form foro forr frid frim frio from iddm iddo idid idio idir idrf idro ifid ifim ifor ifrf ifri iiii iiio iioi iioo imdi imfi imid imir immi immo imod imof imri imro imrr iod- iodd iodo ioii ioio iomo ioof iooi iooo iori irdo irfm iri- irid irio irmo irod irri mddm mdfi mdii mdmf mfor mfri mid- midi mido miff mifi miii miio mim- mimd mimi mimo mio- mird miri miro mirr mmdf mmdi mmfd mmff mmii mmmd mmmm mmod mmor mmrf modd modi modo moff mofo moif moii moio moir momi momo mood moor mord morf mori moro mrdd mrmd oddd oddi odio odir odmr odom odoo odor ofdr off- offo offr ofid ofor oido oiii omid omim omio omo- omoi omoo omor omri omro oodi ooff ooid oooo oord ordo orff orfi ori- orid orif orio ormo oro- orof orom oror orri orro rdio rfdi rfid ridd ridi rido riff riif rimi rimm rimo riom riri rmif rodd rodi rodo roff rofo roid roif roio roir romd romi romm romo rood roof rooi room roor rori roro rrif rrrr