-er a-a a-c a-t aaa aac aae aaf aap aar aat aax ac- aca acc ace acf acp acr act acx aea aec aee aef aep aer aet aex af- afa afc afe aff afp afr aft afx ap- apa apc ape apf app apr apt apx ar- ara arc are arf arp arr art arx at- ata atc ate atf atp atr att atx ax- axa axe axp axr axt axx c-- caa cac cae caf cap car cat cax cca ccc cce ccf ccp ccr cct ccx ce- cea cec cee cef cep cer cet cex cfa cfc cfe cff cfp cfr cft cfx cpa cpc cpe cpf cpp cpr cpt cpx cra crc cre crf crp crr crt crx cta ctc cte ctf ctp ctr ctt ctx cxc cxf cxp cxr cxt cxx eaa eac eae eaf eap ear eat eax ec- eca ecc ece ecf ecr ect ecx eea eec eee eef eep eer eet eex ef- efa efc efe eff efp efr eft efx ep- epa epc epe epf epp epr ept epx era erc ere erf erp err ert eta etc ete etf etp etr ett etx ex- exa exc exe exp exr ext exx faa fac fae faf fap far fat fax fca fcc fce fcf fcp fcr fct fcx fea fec fee fef fep fer fet fex ffa ffc ffe fff ffp ffr fft ffx fpa fpc fpe fpp fpr fpt fpx fra frc fre frf frp frr frt fta ftc fte ftf ftp ftr ftt ftx fxe fxp fxr fxt fxx p-p paa pac pae paf pap par pat pax pca pcc pce pcf pcp pcr pct pcx pea pec pee pef pep per pet pex pfa pfc pfe pff pfp pfr pft pfx ppa ppc ppe ppf ppp ppr ppt ppx pra prc pre prf prp prr prt prx pt- pta ptc pte ptf ptp ptr ptt ptx pxc pxe pxr pxt ra- raa rac rae raf rap rar rat rax rca rcc rce rcf rcp rcr rct rcx re- rea rec ree ref rep rer ret rex rfa rfc rfe rff rfp rfr rft rpa rpc rpe rpf rpp rpr rpt rpx rra rrc rrf rrp rrr rrt rta rtc rte rtf rtp rtr rtt rtx rxp rxr t-x taa tac tae taf tap tar tat tax tca tcc tce tcf tcp tcr tct tcx te- tea tec tee tef tep ter tet tex tfa tfc tfe tff tfp tfr tft tfx tpa tpc tpe tpf tpp tpr tpt tpx tra trc tre trf trp trr trt trx tta ttc tte ttf ttp ttr ttt ttx txe txf txt xaa xac xaf xap xar xat xcf xcp xcr xcx xee xep xer xet xex xfa xfe xft xfx xpa xpc xpe xpf xpp xpt xrc xrf xrt xrx xtc xtf xtp xtr xtx xxp xxx

aaaa aaac aaae aaaf aaap aaar aaca aacc aace aacf aacp aacr aact aaea aaec aaep aafa aafc aaff aapa aapc aapt aara aarc aare aarp aart aata aatc aatf aatt ac-t acaa acac acae acap acar acat acca accc acce accf accp acct ace- acea acec acer acet acfc acfe acft acpa acpe acpr acpt acr- acra acrc acre acrr acta actc acte actf actt aeac aeaf aeap aect aeer aer- aera aerc aeta aetc aetf aetr aett aetx afaa afap afar afat afca afcc afee afer afet affa affc afft afpa afpc afpe afr- afra afrc afre afta aftc afte aftp afxe apac apap apar apat apax apca apcc apcr apea apec apep aper apet apex apfa apfc apft appa appc appr appt appx apra aprc apre aprt apta aptc apte aptt aptx arac arae araf arap arar arat arax arc- arca arce arct area arec aree aref arep aret arex arfa arfc arff arft 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 atcf atcr atea atec atee atef atep ater atex atfc atfe atpr atra atrc atre atrp atrx atta atte attp attr axaf axar axat axce axer axfr caaa caac caaf caap caat cac- caca cacc cace cacr caec caer caex cafa cafc cafe caff capa capc cape capp capt capx cara carc care carf carp carr cart carx cat- cata catc cate catf catt caxa ccaa ccac ccaf ccap ccar ccat ccca cccc cccf cccp ccee ccfa ccfc ccff ccpa ccpe ccpp ccpr ccra ccrc ccre ccrf ccrp ccrt cctc cctt ceac cear ceat cec- ceca cece cecp cect ceec cef- cefa cefc cepa cepc cepe cepp cepr cept cer- cera cerc cere cerf cerp cert cet- ceta cete cetp cexe cfaa cfac cfae cfar cfax cfca cfcf cffr cfpa cfpr cfra cfre cfrp cfrt cfrx cfta cftc cfte cftr cpaa cpac cpaf cpap cpca cpce cpea cpep cper cpff cpft cppa cpre cprt cptp cptr crac craf crap crar crat crax crca crcc crce crcr cre- crea crec cree crep cret crex crfc crpc crrt crtc crtf crtp ctae ctca ctcf ctcp ctec ctep ctfc ctpp ctrc ctrp ctta cxxx eaaf eaca eacc eaec eapc eapp eara eare earp eart eata eate ecaa ecac ecar ecat ecca eccc ecce ecct ecef ecfa ecfc ecfr ecpa ecpp ecra ecrc ecrf ecrr ect- ecta ectc ectf eeca eeea eeee eefa eefe eera eerc eeta eetc eete eext efax efca efet effa efpa eft- efta eftp epaa epac epcc epec epee eper epfa epfc eppa eppc eppp epra eprp epta epte epxp er-x eraf erap erat erca ercc erce ercp erec erer eret erfc erft erfx erpa erpe erra errc erre erta etap etat etcc etec etee eter etfa etfc etfe etra etre etta ette exa- exec exer expr expt exrx exta exte extr faaa faac faap faca facc face facp fact faex fafa fafc fafe faff fapa fape fapp fara farc fare farp farr fart fata fatc fate fatf fatt faxe fcap fcar fcat fcca fccf fccp fcpa fcra feaf feap fear feat fece