-ene cccc ccee cche ccnc ccne cctc cctt cec- cece cect ceec cen- cene cent cet- cete cexe chce chch chec chee cheh chen chet chex chnc chtt cnet cnex cntc ctec cten ctne cttn cxxx eccc ecce ecct eche echt ecne ect- ectc ecth eeee eent eetc eete eeth eext ehcc eheh ehen ehte ence ench enee ennc enne ent- ente etcc etch etec etee eten eth- ethe ethn etne ette ettn exch exec exen exh- exte hccc hcch hech hect heet hehe hehn hene henh henn hent hete heth hett hex- hexe hext hhex hhhh hnce htcc hten htet nccc nccn ncct ncec ncee ncen nchc ncnc nctc ncte necc nece nech nect neen neet nehe nene nenh nent net- nete neth nett nexe next nexx nhcc nhnn nnnn nntn ntcc nthn ntht tccc tch- tche tchh tcnn tctc tech tect teec teen teet tenc tene tenn tent tete teth tett tetx text thch the- thec thee then thet thex thnt thnx tncc ttcn tten tttt txcn txen xen- xene xenn xexe xnee xnet xxxx