cccc ccee ccoc cctc cctt cec- cece ceco cect ceec cet- cete ceto coce coco coct coot cotc cote coto cott coty coyo coyt ctec ctot cyc- cycc cyt- cyte cyto cyy- cyyc eccc ecce ecco ecct eco- ecot ect- ectc ecto eeee eeoc eetc eete eotc eoto etcc etco etec etee etoe etoy ette etto etty eyec eyet eyey eyot eyte o-eo occc occt oce ocee ocet oct- octe octo octy oec- oecc oeec oeye oeyo oooo ooty otee oto- otoe otoo otoy otte otto oyce oyee tccc tctc teco tect teec teet tete teto tett teye to-y toce toco toee toet toey toot totc tote toto tott toty toyo toyt tteo ttoe ttoy tttt tyce tyco tyee tyet tyte tyto tytt tyty yccc ycee yctc yeet yeot yete yeto yett yeye yeyo yoot yote yott yoye yoyo yyyy