d-ix dddd ddpo didi dido dif- diff diii dilf dili dill dilo diol diop dipl dipo dipp dixi dlii dlil dlix dlxi do-x dod- dodd dodi dodo doff doid doil doix dold dolf doli doll dolo dolp dood doof dool doop dopo dopp dpll dppx dxfx dxif dxii dxip dxix dxli dxll dxol dxxl dxxx ffff ffii fidf fido fiff fifi fifo fiii fiil fild fili fill filo fipp fixx flid flii flip flix flod floo flop flox fofo foid foil foix fold foli foll folo folx food foof fool fopp foxx fpdl fxdd iddo idfp idid idil idio idli idol ifid ifil ifpo iiii iiio iioi iioo iiop iipf ilio ill- illd illi illo illp iloo ilxx iod- iodd iodo ioii ioio iolo ioof iooi iooo iopl ipdi ipid ipil ipix iplo ipod ipop ippf ippo ixil ixxi lddp ldif lidl lido liff lifl lifo lifx liii lili lill lilo lio- liod lip- lipi lipl lipo lipp lixi lldp llll llod lloo lodi loff lofi loid loif loix lold loli loll lolo lood loof lool loop lopi lopp lox- loxo lpfp lpod lppl lxii lxxi lxxx oddd oddi odio odoo odop off- offo ofid oido oiii olid olio olli ollo olof oodi ooff ooid oold oolo oooo opii opio opo- oppi oppo oxi- oxid oxo- oxof oxox oxxo pfff pfli pido pidx piff piip pil- pild pili pill pilo pipi pipo pipp pixl pixo pixx plff plid plif plio plip plod ploo plop plpp pod- podd podi podo poff pofi poid poil poio poix pold poli poll polo pood poof pool poop pop- popi popo popp ppid ppif ppli pplo ppod pppd pppo pppp x-fi xdxf xidi xiii xil- xili xill xilp xixi xlii xlix xlox xolo xoxo xpdf xpdl xxii xxix xxxi xxxo xxxx