dddd ddpo dfrf dfri didi dido dif- diff diii dilf dili dill dilo diol diop dior dipl dipo dipp dird dirl dirr dlii dlil dod- dodd dodi dodo doff doid doil dold dolf doli doll dolo dolp dood doof dool doop door dopo dopp dopr dord dorf dori doro dorp dorr dpll drif dril drip drod drof drol drop 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 fofo foid foil fold foli foll folo folr food foof fool fopp for- ford fori forl foro forr fpdl fprf frid fril frio frip frol frop frpd iddo idfp idid idil idio idir idli idol idrf idro ifid ifil ifor ifpo ifrf ifri iiii iiio iioi iioo iiop iipf ilio ilir ill- illd illi illo illp iloo ilpr iod- iodd iodo ioii ioio iolo ioof iooi iooo iopl iori ipdi ipid ipil iplo ipod ipop ippf ippo ippr ipri irdo irdp iri- irid iril irio irip irod irop irri lddp ldif lfrd lidl lido liff lifl lifo liii liir lili lill lilo lio- liod lior lip- lipi lipl lipo lipp lird liri lirl liro lirp lirr lldp llll llod lloo lodi loff lofi loid loif loir lold loli loll lolo lood loof lool loop loor lopi lopp lord lori loro lpfp lpod lppl lprp lrdd lrif lroi lrrr oddd oddi odio odir odoo odop odor odrl odrp ofdr off- offo offr ofid ofor oido oiii olid olio olli ollo olof olor oodi ooff ooid oold oolo oooo oord opii opio opo- opor oppi oppo ordo orff orfi ori- orid orif oril orio orlo oro- orof oror orpi orri orro pdpr pfff pffr pfli pido piff piip pil- pild pili pill pilo pipi pipo pipp piri pirl piro pirr plff plid plif plio plip plod ploo plop plpp plri pod- podd podi podo poff pofi poid poil poio pold poli poll polo pood poof pool poop poor pop- popi popo popp pori poro porr ppid ppif ppli pplo ppod pppd pppo pppp pprf pri- prid prif prii prlr pro- prod prof prol proo prop prpd prrd prri rdio rfdi rffl rfid ridd ridi rido riff riif rill rilo rilp riol ripd ripi ripl ripp ripr riri rlif rodd rodi rodo roff rofl rofo roid roif roil roio roir rold rolf roll rolo rolp rood roof rooi rool roop roor ropo rori roro rpdp rpii rpof rrif rrrr