dddd ddpo dfrf dfri didi dido didu dif- diff diii dilf dili dill dilo diol diop dior diou dipl dipo dipp dipu dird dirl dirr dlii dlil dod- dodd dodi dodo doff doid doil dold dolf doli doll dolo dolp dolu dood doof dool doop door dopo dopp dopr dord dorf dori doro dorp dorr doru doud douf doul doup dour dpll drif dril drip drod drof drol drop drou drui drup druu dudd dudo dudu duff dufu duid duif duil duir duli dull dulo dulu duo- dupo duri duro duru duul duur fdlr ffff ffii ffrr fidf fido fiff fifi fifo fiii fiil fild fili fill filo fior fipp fldr flid flii flip flod floo flop flor flou flud fluf fluo flur fofo foid foil fold foli foll folo folr food foof fool fopp for- ford fori forl foro forr foud foul foup four fpdl fprf frid fril frio frip frol frop frou frpd fudd fudi fuff fufu fuid fuil fuir fuli full fulu fuor fur- furi furl furo furr iddo idfp idid idil idio idir idli idol idrf idro iduo ifid ifil ifor ifpo ifrf ifri iiii iiio iioi iioo iiop iipf ilio ilir ill- illd illi illo illp iloo ilpr ilud iod- iodd iodo ioii ioio iolo ioof iooi iooo iopl iori ipdi ipid ipil iplo ipod ipop ippf ippo ippr ipri ipur irdo irdp irfu iri- irid iril irio irip irod irop irri irul iuiu iupp lddp ldif lfrd lidl lido liff lifl lifo liii liir lili lill lilo lilu lio- liod lior lip- lipi lipl lipo lipp lipu lird liri lirl liro lirp lirr liru liuf lldp llll llod lloo llud lodi loff lofi loid loif loir loiu lold loli loll lolo lood loof lool loop loor lopi lopp lopu lord lori loro loud loui loul loup lour louu lpfp lpod lppl lprp lrdd lrif lroi lrpu lrrr ludd ludi ludo luff lufu luif luli lull lulu lupi lupo lupu lurd luri luup oddd oddi odio odir odiu odoo odop odor odou odrl odrp odur ofdr off- offo offr offu ofid ofor oido oiii olid olio olli ollo olof olor olur oodi ooff ooid oold oolo oooo oord opii opio opo- opor oppi oppo ordo ordu orff orfi orfu ori- orid orif oril orio orlo orlu oro- orof oror orpi orri orro orup ouff ouii ouir ould oulu our- ouro ouu- pdpr pfff pffr pfli pfui pido piff piip pil- pild pili pill pilo pilu pipi pipo pipp piri pirl piro pirr piru plff plid plif plio plip plod ploo plop plou plpp plri plud plup plur pod- podd podi podo podu poff pofi poid poil poio pold poli poll polo polu pood poof pool poop poor pop- popi popo popp pori poro porr poud pouf poui poul poup pour ppid ppif ppli pplo ppod pppd pppo pppp pprf ppru ppur pri- prid prif prii prlr pro- prod prof prol proo prop prou prpd prrd prri prud pruf pruu pudo pudu puff puid puir puiu puli pull pulo pulp pulu pupi pupl pupu pur- puri purl puro purp purr puru rdio rfdi rffl rfid ridd ridi rido riff rifu riif rill rilo rilp rilu riol riou ripd ripi ripl ripp ripr riri rlif rodd rodi rodo roff rofl rofo roid roif roil roio roir roiu rold rolf roll rolo rolp rood roof rooi rool roop roor ropo rori roro roru roud rouf roul roup rpdp rpii rpof rrif rrrr rudd rudi rudl rudo rudp ruff rufo ruid ruif rull rulo rupp rurd ruri ruro rurp ruru ruud u-rp uddi udid udir udoo udop udpd ufip uipi uirr ulli ullo ullr ulo- ulul uofl uofo uor- updf updo uplo upor uppp uppu upri upup urdu urff urfi urif uriu uro- urol uroo urpo urri urup urur uulu uuri uuuu