-er a-a a-c a-t aaa aac aae aap aar aat aax ac- aca acc ace acp acr act acx aea aec aee aep aer aet aex ap- apa apc ape app apr apt apx ar- ara arc are arp arr art arx at- ata atc ate atp atr att atx ax- axa axe axp axr axt axx c-- caa cac cae cap car cat cax cca ccc cce ccp ccr cct ccx ce- cea cec cee cep cer cet cex cpa cpc cpe cpp cpr cpt cpx cra crc cre crp crr crt crx cta ctc cte ctp ctr ctt ctx cxc cxp cxr cxt cxx eaa eac eae eap ear eat eax ec- eca ecc ece ecr ect ecx eea eec eee eep eer eet eex ep- epa epc epe epp epr ept epx era erc ere erp err ert eta etc ete etp etr ett etx ex- exa exc exe exp exr ext exx p-p paa pac pae pap par pat pax pca pcc pce pcp pcr pct pcx pea pec pee pep per pet pex ppa ppc ppe ppp ppr ppt ppx pra prc pre prp prr prt prx pt- pta ptc pte ptp ptr ptt ptx pxc pxe pxr pxt ra- raa rac rae rap rar rat rax rca rcc rce rcp rcr rct rcx re- rea rec ree rep rer ret rex rpa rpc rpe rpp rpr rpt rpx rra rrc rrp rrr rrt rta rtc rte rtp rtr rtt rtx rxp rxr t-x taa tac tae tap tar tat tax tca tcc tce tcp tcr tct tcx te- tea tec tee tep ter tet tex tpa tpc tpe tpp tpr tpt tpx tra trc tre trp trr trt trx tta ttc tte ttp ttr ttt ttx txe txt xaa xac xap xar xat xcp xcr xcx xee xep xer xet xex xpa xpc xpe xpp xpt xrc xrt xrx xtc xtp xtr xtx xxp xxx

aaaa aaac aaae aaap aaar aaca aacc aace aacp aacr aact aaea aaec aaep aapa aapc aapt aara aarc aare aarp aart aata aatc aatt ac-t acaa acac acae acap acar acat acca accc acce accp acct ace- acea acec acer acet acpa acpe acpr acpt acr- acra acrc acre acrr acta actc acte actt aeac aeap aect aeer aer- aera aerc aeta aetc aetr aett aetx apac apap apar apat apax apca apcc apcr apea apec apep aper apet apex appa appc appr appt appx apra aprc apre aprt apta aptc apte aptt aptx arac arae arap arar arat arax arc- arca arce arct area arec aree arep aret arex arpa arpe arr- arra arrc arre arrr arrt arta artc arte artr artx at-t at-x ataa atac atae atap atar atat atax atca atcc atcr atea atec atee atep ater atex atpr atra atrc atre atrp atrx atta atte attp attr axar axat axce axer caaa caac caap caat cac- caca cacc cace cacr caec caer caex capa capc cape capp capt capx cara carc care carp carr cart carx cat- cata catc cate catt caxa ccaa ccac ccap ccar ccat ccca cccc cccp ccee ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccrt cctc cctt ceac cear ceat cec- ceca cece cecp cect ceec cepa cepc cepe cepp cepr cept cer- cera cerc cere cerp cert cet- ceta cete cetp cexe cpaa cpac cpap cpca cpce cpea cpep cper cppa cpre cprt cptp cptr crac crap crar crat crax crca crcc crce crcr cre- crea crec cree crep cret crex crpc crrt crtc crtp ctae ctca ctcp ctec ctep ctpp ctrc ctrp ctta cxxx eaca eacc eaec eapc eapp eara eare earp eart eata eate ecaa ecac ecar ecat ecca eccc ecce ecct ecpa ecpp ecra ecrc ecrr ect- ecta ectc eeca eeea eeee eera eerc eeta eetc eete eext epaa epac epcc epec epee eper eppa eppc eppp epra eprp epta epte epxp er-x erap erat erca ercc erce ercp erec erer eret erpa erpe erra errc erre erta etap etat etcc etec etee eter etra etre etta ette exa- exec exer expr expt exrx exta exte extr paap paar paat paca pace pact pacx paea paec paep paer papa pape papp papr par- para parc pare parp parr part pata pate patr patt pcaa pcae pcap pcca pccc pcce pcea pcep pcer pcpp pcra pcrc pcre pcte peac peap pear peat peax peca pece pecr pect peec peep peer peet pepa pepe per- pera perc pere perp perr pert peta pete petr pett ppac ppap ppar ppcc pper pppa pppp pprc ppta pptt prae prar prat prca prcc prcp pre- prec pree prep pret prex prtc prtp prtr ptca ptcc pter pttc raat rac- raca racc race ract raec raep raer rapa rapc rape rapp rapt rara rare rata rate ratp ratt raxa rcac rccc rcep rcet rcpt rctc rea- reac reae reap rear reat reca recc rece recp recr rect reep reet repe repp repr rept rera rere rert reta rete retr rett rexx rpca rpet rpta rrat rrrr rtca rtcc rtce rtee rtex rtpa rttp taa- taar taat taca tacc tace tact taec taer tapa tape tapp tapr tapt tara tarc tare tarp tarr tart tata tate tatr tatt tax- taxa taxe taxt tcap tcca tccc tcep tcpa tctc teac tear teat teca tecr tect teec teer teet tepa tepe tepp ter- tera terc tere terp terr teta tete tetr tett tetx texa text tpac tpap tpcp tper tppa tppp tppr tpte tptp tptr traa trac trae trap trat trax trca trcc tre- trea trec tree tret trex trpa trpc trpe trpp trra trtc trte trtr ttcp tter tttt txaa txtr xaar xace xact xara xare xate xcat xeer xer- xera xert xexe xpac xpax xpcc xper xpra xrep xtar xtea xtep xtra xxxx

-aaa- -cpca -tree a-a-p a-pac aaace aaaee aaarc aaata aacap aaccp aacpa aacpp aacpr aacte aactp aapep aatxe acaca acapp acar- acara acare acate accpt accra aceae acera acet- aceta acrea acree act-r actar acter actra aeaea aetat aeter