-er a-a a-c a-t aaa aac aae aaf aar aat aax ac- aca acc ace acf acr act acx aea aec aee aef aer aet aex af- afa afc afe aff afr aft afx ar- ara arc are arf arr art arx at- ata atc ate atf atr att atx ax- axa axe axr axt axx c-- caa cac cae caf car cat cax cca ccc cce ccf ccr cct ccx ce- cea cec cee cef cer cet cex cfa cfc cfe cff cfr cft cfx cra crc cre crf crr crt crx cta ctc cte ctf ctr ctt ctx cxc cxf cxr cxt cxx eaa eac eae eaf ear eat eax ec- eca ecc ece ecf ecr ect ecx eea eec eee eef eer eet eex ef- efa efc efe eff efr eft efx era erc ere erf err ert eta etc ete etf etr ett etx ex- exa exc exe exr ext exx faa fac fae faf far fat fax fca fcc fce fcf fcr fct fcx fea fec fee fef fer fet fex ffa ffc ffe fff ffr fft ffx fra frc fre frf frr frt fta ftc fte ftf ftr ftt ftx fxe fxr fxt fxx ra- raa rac rae raf rar rat rax rca rcc rce rcf rcr rct rcx re- rea rec ree ref rer ret rex rfa rfc rfe rff rfr rft rra rrc rrf rrr rrt rta rtc rte rtf rtr rtt rtx rxr t-x taa tac tae taf tar tat tax tca tcc tce tcf tcr tct tcx te- tea tec tee tef ter tet tex tfa tfc tfe tff tfr tft tfx tra trc tre trf trr trt trx tta ttc tte ttf ttr ttt ttx txe txf txt xaa xac xaf xar xat xcf xcr xcx xee xer xet xex xfa xfe xft xfx xrc xrf xrt xrx xtc xtf xtr xtx xxx

aaaa aaac aaae aaaf aaar aaca aacc aace aacf aacr aact aaea aaec aafa aafc aaff aara aarc aare aart aata aatc aatf aatt ac-t acaa acac acae acar acat acca accc acce accf acct ace- acea acec acer acet acfc acfe acft acr- acra acrc acre acrr acta actc acte actf actt aeac aeaf aect aeer aer- aera aerc aeta aetc aetf aetr aett aetx afaa afar afat afca afcc afee afer afet affa affc afft afr- afra afrc afre afta aftc afte afxe arac arae araf arar arat arax arc- arca arce arct area arec aree aref aret arex arfa arfc arff arft arr- arra arrc arre arrr arrt arta artc arte artr artx at-t at-x ataa atac atae atar atat atax atca atcc atcf atcr atea atec atee atef ater atex atfc atfe atra atrc atre atrx atta atte attr axaf axar axat axce axer axfr caaa caac caaf caat cac- caca cacc cace cacr caec caer caex cafa cafc cafe caff cara carc care carf carr cart carx cat- cata catc cate catf catt caxa ccaa ccac ccaf ccar ccat ccca cccc cccf ccee ccfa ccfc ccff ccra ccrc ccre ccrf ccrt cctc cctt ceac cear ceat cec- ceca cece cect ceec cef- cefa cefc cer- cera cerc cere cerf cert cet- ceta cete cexe cfaa cfac cfae cfar cfax cfca cfcf cffr cfra cfre cfrt cfrx cfta cftc cfte cftr crac craf crar crat crax crca crcc crce crcr cre- crea crec cree cret crex crfc crrt crtc crtf ctae ctca ctcf ctec ctfc ctrc ctta cxxx eaaf eaca eacc eaec eara eare eart eata eate ecaa ecac ecar ecat ecca eccc ecce ecct ecef ecfa ecfc ecfr ecra ecrc ecrf ecrr ect- ecta ectc ectf eeca eeea eeee eefa eefe eera eerc eeta eetc eete eext efax efca efet effa eft- efta er-x eraf erat erca ercc erce erec erer eret erfc erft erfx erra errc erre erta etat etcc etec etee eter etfa etfc etfe etra etre etta ette exa- exec exer exrx exta exte extr faaa faac faca facc face fact faex fafa fafc fafe faff fara farc fare farr fart fata fatc fate fatf fatt faxe fcar fcat fcca fccf fcra feaf fear feat fece fect feer feet fefc fefe feff fera ferc fere ferr fert feta fete fetr fett fext ffar ffcc ffee ffff ffrr fftf frac frae frat frax frcc frea free fret frex frfc frta ft-c ftea fter ftfc raaf raat rac- raca racc race ract raec raef raer rafa rafc rafe raff raft rara rare rarf rata rate ratf ratt raxa rcac rcaf rccc rcet rcfc rctc rea- reac reae reaf rear reat reca recc rece recr rect reef reet refe reff refr reft rera rere rert reta rete retr rett rexx rfae rfef rffc rftc rrat rrfc rrrr rtca rtcc rtce rtee rtex rtfc taa- taaf taar taat taca tacc tace tact taec taer tafa tafc tafe taff taft tara tarc tare tarf tarr tart tata tate tatr tatt tax- taxa taxe taxf taxt tcca tccc tcfc tctc teac tear teat teca tecr tect teec teef teer teet tefc teff teft ter- tera terc tere terf terr teta tete tetr tett tetx texa text tfae tfca tfec tftc traa trac trae traf trat trax trca trcc tre- trea trec tree tref tret trex trfc trfr trra trtc trte trtr tter ttfa ttfc ttff tttt txaa txtr xaar xace xact xara xare xate xcat xeer xefe xer- xera xert xexe xfce xfer xtar xtea xtra xxxx

-aaa- -tree aaace aaaee aaarc aaata aacft aacte aaeaf aafat aatxe acaca acar- acara acare acate accra aceae acera acet- aceta acrea acree act-r actar acter actra aeaea aetat aeter aface afact afara afare afate afcea afcec afear afefe afere affer afree afret aftar after aftra aftre ara-c araat araca arace araea araft arara arare arata arate araxa arcae arcee arct- arcte areae arear areat areca arect areef areet arere arete arett arexx arfe arrea arret art-x artar artat artax artea artec arter artex atafc atara ataxx atear ateat ateca ater- aterr atete atraf atrax atree atrex