aaaa aaac aaae aaap aaca aacc aace aacp aact aaea aaec aaep aapa aapc aapt aata aatc aatt ac-t acaa acac acae acap acat acca accc acce accp acct ace- acea acec acet acpa acpe acpt acta actc acte actt aeac aeap aect aeta aetc aett aetx apac apap apat apax apca apcc apea apec apep apet apex appa appc appt appx apta aptc apte aptt aptx at-t at-x ataa atac atae atap atat atax atca atcc atea atec atee atep atex atta atte attp axat axce caaa caac caap caat cac- caca cacc cace caec caex capa capc cape capp capt capx cat- cata catc cate catt caxa ccaa ccac ccap ccat ccca cccc cccp ccee ccpa ccpe ccpp cctc cctt ceac ceat cec- ceca cece cecp cect ceec cepa cepc cepe cepp cept cet- ceta cete cetp cexe cpaa cpac cpap cpca cpce cpea cpep cppa cptp ctae ctca ctcp ctec ctep ctpp ctta cxxx eaca eacc eaec eapc eapp eata eate ecaa ecac ecat ecca eccc ecce ecct ecpa ecpp ect- ecta ectc eeca eeea eeee eeta eetc eete eext epaa epac epcc epec epee eppa eppc eppp epta epte epxp etap etat etcc etec etee etta ette exa- exec expt exta exte paap paat paca pace pact pacx paea paec paep papa pape papp pata pate patt pcaa pcae pcap pcca pccc pcce pcea pcep pcpp pcte peac peap peat peax peca pece pect peec peep peet pepa pepe peta pete pett ppac ppap ppcc pppa pppp ppta pptt ptca ptcc pttc taa- taat taca tacc tace tact taec tapa tape tapp tapt tata tate tatt tax- taxa taxe taxt tcap tcca tccc tcep tcpa tctc teac teat teca tect teec teet tepa tepe tepp teta tete tett tetx texa text tpac tpap tpcp tppa tppp tpte tptp ttcp tttt txaa xace xact xate xcat xexe xpac xpax xpcc xtea xtep xxxx