-ing dddd ddpo dfrf dfri didi dido dif- diff digg digi digo diii din- ding dini dinn dino dion diop dior dipn dipo dipp dird dirr dnpo dod- dodd dodg dodi dodo doff dog- dogg dogi dogo dogp 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 dpin dpni dprg drif drin drip drno drod drof drog dron drop ffff ffii ffrr fidf fido fiff fifi fifo figg figo fiii find fing fini finn fino finp fion fior fipp firn fndd fndg fndn fndr fofo fogg fogi fogn fogo foid foin fond fong fono food foof foon fopp for- ford forg fori forn foro forr fpin fprf frid frig frin frio frip frog fron frop frpd gdfr gdnf gdor gfor ggfg gggg ggpo ggrn gidd gidi gido giff gigg gigi gign gigo ging gini ginn gino giog gioi gion giop gipf gipi gipp gird girg giri girn giro girr gnin gnip gnod gnof gnoo gnrr godi godo goff gofr gogi gogo goif goin goip gon- gond gong goni gonn gono good goof goog gooi goon goop goor gopi gopo gord gorf gorg gori gorn goro gorp gorr gpdf gpgp gpip gprd gprp grid grif grig grin grip grni grod grof grog groi gron groo grop gror grrr i-go i-no iddo idfp idgf idgo idid idig idin idio idir idno idog idon idrf idro ifid ifni ifno ifnr ifor ifpo ifrf ifri igni igno igon igoo igor igri iiii iiio iino iioi iioo iiop iipf ind- indi indo infi info infp ingo inid inig inni inno innr ino- inoi inon inor inp- inpi inpp inri inro iod- iodd iodo ioii ioio ioni ionn iono ioof iooi iooo iorg iori ipdi ipid ipin ipod ipop ippf ippo ippr ipri irdo irdp iri- irid irig irin irio irip irod iron irop irri n-ii nddo ndfi ndnp ndop ndor ndpd ndpr ndrf ndri nfff nfip nfon ngio ngon ngor ngri nidd nidi nido niff nigg nigo niip niir nind ning nini nino niog nion nioo nipr niro nngn nnnn nnpi nnpr nodi nodo nofi nogg nogo noid noif noin noio noir non- nong noni nonn nono noo- noon nooo noop noor nor- nord norf norg nori norn noro norr npif npin nppd npri nron nrpn nrrd oddd oddi odin odio odir odon odoo odop odor odrp ofdr off- offo offr ofgo ofid ofno ofor ogfr oggi ogin ogni ogod ogog ogoi ogon ogri ogro oido oigo oiii oion ondi ondo ongi ongo onir onni onno onod onon onor onpg oodi ooff ooid oooo oord opii opin opio opng opo- opon opor oppi oppo ordn ordo orff orfi orgn orgo ori- orid orif orig orin orio orni orno oro- orof oron oror orpi orri orro pdpn pdpr pfff pffr pgdn pido piff pigf pigg pign pigo pigp piip pind ping pini pinn pino pinp pion pipi pipo pipp pirg piri pirn piro pirr pnin pnon pnpo pnpp pnro pod- podd podi podo 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 ppgi ppid ppif ppig ppod pppd pppn pppo pppp pprf pri- prid prif prig prii prin prnd prnp pro- prod prof prog pron proo prop prpd prrd prri rdio rfdi rfid ridd ridi rido riff rigg rigi rigo riif riin rind rinf ring rinn rino rion ripd ripi ripp ripr riri rndf rndp rnin rnod rodd rodi rodo roff rofo rogg rogi rogo roid roif roig roin roio roir rond rong roni rono rood roof roog rooi roon roop roor ropo rori roro rpdp rpii rpof rpon rppn rrif rrrr