-ing dddd ddpo dfrf dfri didi dido didu dif- diff digg digi digo diii din- ding dini dinn dino dinu dion diop dior diou dipn dipo dipp dipu dird dirr dnpo dod- dodd dodg dodi dodo doff dog- dogg dogi dogo dogp dogu doid doig doin dond dong doni donn dono donp donr dood doof doon doop door dopo dopp dopr dord dorf dori dorn doro dorp dorr doru doud douf doug doun doup dour dpin dpni dprg drif drin drip drno drod drof drog dron drop drou drug drui drup druu dudd dudo dudu duff dufu dugu duid duif duin duir dung dunn duno duo- duon dupo durg duri durn duro duru duur ffff ffii ffrr ffun fidf fido fiff fifi fifo figg figo fiii find fing fini finn fino finp fion fior fipp firn fndd fndg fndn fndr fnuf fofo fogg fogi fogn fogo foid foin fond fong fono food foof foon fopp for- ford forg fori forn foro forr foud foug foun foup four fpin fprf frid frig frin frio frip frog fron frop frou frpd frug frun fudd fudi fuff fufu fugi fugo fugu fuid fuig fuir fund funf fung fuor fur- furg furi furn furo furr gdfr gdnf gdor gfor ggfg gggg ggpo ggrn gidd gidi gido giff gifu gigg gigi gign gigo ging gini ginn gino ginu giog gioi gion giop gipf gipi gipp gird girg giri girn giro girr giru giur gnin gnip gnod gnof gnoo gnrr godi godo goff gofr gofu gogi gogo goif goin goip gon- gond gong goni gonn gono gonu good goof goog gooi goon goop goor gopi gopo gopu gord gorf gorg gori gorn goro gorp gorr gou- goud gouf goug goun goup gour gpdf gpgp gpip gprd gprp grid grif grig grin grip grni grod grof grog groi gron groo grop gror grou grrr gruf grug grui grun grur gudi gudo gudu guff gugg gugi gugu guid guin gund gung gunn gurd gurg guri gurn guro gurr guru i-go i-no iddo idfp idgf idgo idid idig idin idio idir idno idog idon idrf idro idun iduo ifid ifni ifno ifnr ifor ifpo ifrf ifri igni igno ignu igon igoo igor igri iiii iiio iino iioi iioo iiop iipf ind- indi indo indu infi info infp ingo inid inig inni inno innr innu ino- inoi inon inor inou inp- inpi inpp inri inro inui inun inup iod- iodd iodo ioii ioio ioni ionn iono ioof iooi iooo iorg iori ioug ioun ipdi ipid ipin ipod ipop ippf ippo ippr ipri ipur irdo irdp irfu iri- irid irig irin irio irip irod iron irop irri irun iuiu iuno iupp n-ii n-up nddo ndfi ndnp ndop ndor ndpd ndpr ndrf ndri nfff nfip nfon ngio ngon ngor ngou ngri ngur nguu nidd nidi nido niff nigg nigo niip niir niiu nind ning nini nino niog nion nioo niou nipr niro niru niur nngn nnnn nnpi nnpr nodi nodo nodu nofi nogg nogo noid noif noin noio noir non- nong noni nonn nono nonu noo- noon nooo noop noor nor- nord norf norg nori norn noro norr noun noup nour npif npin nppd npri nron nrpn nrrd nudd nudi nudo nuff nuin nung nunn nuno nuon nurd nuri nurn nurp nurr nuru oddd oddi odin odio odir odiu odon odoo odop odor odou odrp odur ofdr off- offo offr offu ofgo ofid ofno ofor ogfr oggi ogin ogni ogod ogog ogoi ogon ogou ogpu ogri ogro ogui ogun oido oigo oiii oion ondi ondo ongi ongo ongu onir onni onno onod onon onor onpg onpu onup onur oodi ooff ooid oooo oord opii opin opio opng opo- opon opor oppi oppo ordn ordo ordu orff orfi orfu orgn orgo ori- orid orif orig orin orio orni orno oro- orof oron oror orpi orri orro orup ouff ouii ouin ouir oun- ound oung our- ourn ouro ouu- pdpn pdpr pfff pffr pfui pgdn pgou pgpu pgup pido piff pigf pigg pign pigo pigp pigu piip pind ping pini pinn pino pinp pinu pion pipi pipo pipp pirg piri pirn piro pirr piru pnin pnon pnpo pnpp pnro pnup pod- podd podi podo podu poff pofi pogg pogo poid poin poio pond pong poni pono ponp pood poof poon poop poor pop- popi popo popp porg pori porn poro porr poud pouf poui poun poup pour ppgi ppid ppif ppig ppod pppd pppn pppo pppp pprf ppru ppur pri- prid prif prig prii prin prnd prnp pro- prod prof prog pron proo prop prou prpd prrd prri prud pruf pruu pudo pudu puff pugo pugu puid puig puin puir puiu pund pung puno punu pupi pupu pur- purg puri puro purp purr puru rdio rfdi rfid ridd ridi rido riff rifu rigg rigi rigo rigu riif riin rind rinf ring rinn rino rion riou ripd ripi ripp ripr riri rndf rndp rnin rnod rodd rodi rodo roff rofo rogg rogi rogo roid roif roig roin roio roir roiu rond rong roni rono rood roof roog rooi roon roop roor ropo rori roro roru roud rouf roun roup rpdp rpii rpof rpon rppn rrif rrrr rrun rudd rudi rudo rudp ruff rufo rugg rugi ruid ruif ruin rund runf rung runi runn runo rupp rurd ruri ruro rurp ruru ruud ruun u-rp uddi udid udig udin udir udon udoo udop udpd udun ufip uggo ugni ugod ugri ugro ugur uguu uipi uirr undi undo unfd unfp ungo ungp ungu uni- unif unii unin unio unir unni unno unon unop unrf unro uofg uofo uor- updf updo upgo upin upnp upon upor uppp uppu upri upup urdu urff urfi urgi urgu urif urin uriu urni uro- uroo urpo urri urun urup urur uuni uuno uuri uuuu