cccc cccv ccee ccgc ccgt ccoc cctc cctt cctv ccvo cec- cece ceco cect ceec cege cego cet- cete ceto cetv cevo cgcc cgcg coce coco coct cogo coot cotc cote coto cott cove covo ctec ctge ctot ctvo ctvt cvcc cvet cvte eccc ecce ecco ecct eco- ecog ecot ect- ectc ecto ectv eeee eeoc eetc eete egcc egcg egec egee egge eggo ego- egot egov egte eotc eoto etcc etco etec etee etoe ette etto etvo evet evoe evoo gc-c gccc gcet gcov gctc gece geet gege gegg gego geo- geog gete getg geto gett geve gevo gggg goce gogo goog goot gote goto gott gotv gove govt gtco gtoe gvtv gvvv o-eo occc occt oce ocee ocet oct- octe octo oec- oecc oeec ogee ogge ogog oooo otee oto- otoe otog otoo otov otte otto ovee ovet ovo- ovoo ovot tccc tcov tctc teco tect teec teet teev tegg tego tegt tete teto tett tgcc tgtc toce toco toee toet toge togo togt toot totc tote toto tott tove tovo tteo ttoe tttt tvgc tvtv vecc veet vege vete veto veve vevo vgcc voce voet voge vogt vooc voog voot vote voto vtec vvog vvvv