c-p-c c-pop c-tec ccccc ccett ceco- ceoce cepet cepot ceppo ceto- cette co-co co-op cocc- cocce cocco coceo cocto coepe coete cooee coope coopt coote copce copec coppe coppo copte copto cott- cotte cotto cpctc cteep cttee ecto- ectot eeeee eepee epcot epopt epote etete etext excop excpt exect execx exept exopc exopt ocoee ocote octet octo- oeco- oeppo ooooo opepe opto- optot optto otoce ototo p-o-x pcept pctct pecco peece peete pepco pepee peppe pept- pepto petco pette petto pexec po-po pocop poete poope poopo poote popco popet popex popop poppe poppo potco potec potee potoc potoo potop potpe potte potto pppox t-pop t-top teepe teoco tepco tepee tepet teppo tetex tette texte tocco toco- toece toeto topee topet topo- topot toppo topto totex toto- totoe totoo totop totte toxo- ttttt xetec xetex xexex xotox xoxox xpect xtext