dddd ddot dfdt dfrf dfri dftr didi dido dif- diff diii din- dini dinn dino dint dion dior diot dird dirr dirt diti dito ditt dntt dod- dodd dodi dodo doff doid doin doit dond doni donn dono donr dont dood doof doon door doot dord dorf dori dorn doro dorr dort dotd doti doto dott drif drin drit drno drod drof dron drot dtor dtot fdot fdti ffff ffii ffrr fftf fidf fido fiff fifi fifo fift fiii find fini finn fino fint fion fior firn fiti fitt fndd fndn fndr fofo foid foin fond fono font food foof foon foot for- ford fori forn foro forr fort foti foto fott frid frin frio frit fron frot ftdi ftii i-no iddo idid idin idio idir idno idon idrf idro ifid ifit ifni ifno ifnr ifor ifrf ifri iftn ifto iiii iiio iiit iino iioi iioo iitr iitt ind- indi indo infi info inid init inni inno innr ino- inoi inon inor inot inri inro intd inti intn into intr iod- iodd iodo ioii ioio ioit ioni ionn iono ioof iooi iooo iori iotf ioto irdo iri- irid irin irio irod iron irri irtf irti itdo itif itin itno itof itoi iton itoo itor itrf itri ittf itto n-ii nddo ndfi ndnt ndor ndrf ndri nfff nfon nfto nidd nidi nido niff nift niir niit nind nini nino nion nioo niro nirt nitf niti nito nitr nnit nnnn nnot nntn nodi nodo nofi noid noif noin noio noir noit non- noni nonn nono nont noo- noon nooo noor noot nor- nord norf nori norn noro norr nort not- noti noto nott nron nrrd ntnd ntof ntto nttr oddd oddi odin odio odir odon odoo odor odot ofdr off- offo offr ofid ofit ofno ofor oido oiii oint oion oirt oiti ondi ondo onir onit onni onno onod onon onor ont- onti onto oodi ooff ooid oont oooo oord oort ordn ordo orff orfi ori- orid orif orin orio orit orni orno oro- orof oron oror orot orri orro orto otif otin otit oto- otof oton otoo otor otro otti otto rdio rfdi rfid ridd ridi rido riff rift riif riin rind rinf rinn rino rion riot riri riti rito ritt rndf rnin rnnt rnod rnot rntd rodd rodi rodo roff rofo roid roif roin roio roir roit rond roni rono ront rood roof rooi roon roor root rori roro rort roti rotn roto rotr rott rrif rrrr rtdt rtnd tdff tdor tdri tfin tfot tidd tiff tifo tift tiit tind tini tinn tino tint tion tird tiri tiro tirr titi tito titt tndd tndf todd todi todo todt toff tofi tofo toft toid toit toni tonn tono tood toof toon toor toot tord torf tori torn toro torr tort totd toti toto totr tott trfd trfr tri- trif trin trio trit trno trod troi tron troo trot trtr ttff ttfn tton tttt