cccc cccf ccee ccfc ccff cche ccoc cctc cctt cec- cece ceco cect ceec cef- cefc cet- cete ceto cfcf cfco cftc cfte cfth chce chch chec chee chef cheh chet chfc choc choh choo chto chtt coce coch coco coct cofc cofe coff coft coho coof cooh coot cotc cote coth coto cott ctcf ctec ctfc ctfo ctot eccc ecce ecco ecct ecef ecfc eche echo echt eco- ecot ect- ectc ectf ecth ecto eeee eefe eeoc eetc eete eeth efco efeo efet eft- ehcc eheh ehte eotc eoto etcc etch etco etec etee etfc etfe eth- ethe etho etoe etoh ette etto fccf fcch fcot fcto fece fech fect feet fefc fefe feff fefo feof feoh fete feth fett ffcc ffee ffff fftf foce foch foco fofo foof foot fote foth foto fott ft-c ftfc hccc hcch hcfc hech hect heef heet hefe heft hehe heho hete heth heto hett hfce hhhh hhof hoce hoch hofe hoff hohe hoho hooe hoof hoot hote hoth hoto hott htcc htet htfc htoh o-eo occc occt oce ocee ocef ocet oche ocht oct- octe octo oec- oecc oeec off- offc offe offh offo ohcc ohee ohho ohoh ohte ohto ooff ooho oooh oooo otee otfc othe otho oto- otoe otof otoh otoo otte otto tccc tcfc tch- tche tchh tcho tctc tech teco tect teec teef teet tefc teff teft teho teoh tete teth teto tett tfec tfot tftc thch the- thec thee thef theo thet thoe thof thoo thot toce toch toco toee toeh toet toff tofo toft toho toof tooh toot totc tote toth toto tott tteo ttfc ttff ttoe tttt