dddd ddot didi dido diii dior diot dird dirr dirt diti dito ditt dod- dodd dodi dodo doid doit dood door doot dord dori doro dorr dort dotd doti doto dott drit drod drot dtor dtot iddo idid idio idir idro 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 itri itto oddd oddi odio odir odoo odor odot oido oiii oirt oiti oodi ooid oooo oord oort ordo ori- orid orio orit oro- oror orot orri orro orto otit oto- otoo otor otro otti otto rdio ridd ridi rido riot riri riti rito ritt rodd rodi rodo roid roio roir roit rood rooi roor root rori roro rort roti roto rotr rott rrrr rtdt tdor tdri tidd tiit tird tiri tiro tirr titi tito titt todd todi todo todt toid toit tood toor toot tord tori toro torr tort totd toti toto totr tott tri- trio trit trod troi troo trot trtr tttt