-er a-a a-b a-c a-t aaa aab aac aae aaj aar aat ab- aba abb abc abe abj abr abt ac- aca acb acc ace acj acr act aea aeb aec aee aej aer aet aja ajb ajc aje ajj ajr ajt ar- ara arb arc are arj arr art at- ata atb atc ate atr att baa bab bac bae baj bar bat bba bbb bbc bbe bbr bbt bca bcb bcc bce bcj bcr bct be- bea beb bec bee ber bet bja bjc bjj bjr bjt bra brb bre brj brr brt bta btb btc bte btr btt c-- c-j caa cab cac cae caj car cat cba cbb cbc cbe cbj cbr cbt cca ccb ccc cce ccj ccr cct ce- cea ceb cec cee cej cer cet cja cjb cjc cjr cra crb crc cre crj crr crt cta ctb ctc cte ctr ctt eaa eab eac eae eaj ear eat eba ebb ebc ebe ebj ebr ebt ec- eca ecb ecc ece ecj ecr ect eea eeb eec eee eer eet eja ejc ejt era erb erc ere err ert eta etb etc ete etj etr ett jaa jab jac jae jaj jar jat jba jbc jbj jbr jbt jca jcb jcc jce jcr jct jea jeb jec jee jej jer jet jja jjb jjc jjj jjr jra jrb jrc jrr jrt jta jtb jtc jte jtr jtt ra- raa rab rac rae raj rar rat rba rbb rbc rbe rbr rbt rca rcb rcc rce rcj rcr rct re- rea reb rec ree rer ret rja rjc rjr rra rrb rrc rrr rrt rta rtb rtc rte rtj rtr rtt taa tab tac tae taj tar tat tba tbb tbc tbe tbj tbr tbt tca tcb tcc tce tcj tcr tct te- tea teb tec tee tej ter tet tjc tje tjr tra trb trc tre trr trt tta ttb ttc tte ttr ttt

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aabt aaca aacb aacc aace aacr aact aaea aaec aara aarc aare aart aata aatc aatt abaa abab abac abae abaj abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abra abrc abta ac-t acaa acab acac acae acar acat acba acca accc acce acct ace- acea acec acer acet acr- acra acrc acre acrr acta actc acte actt aeac aecb aect aeer aer- aera aerc aeta aetc aetr aett ajab ajac ajar ajat ajba ajee ajet arab arac arae arar arat arba arbe arc- arca arce arct area arec aree aret arja arje arr- arra arrc arre arrr arrt arta artc arte artr at-t ataa atab atac atae atar atat atca atcc atcr atea atec atee ater atra atrc atre atta atte attr baaa baar baat baba babb babe babr bac- baca bacc bace bact baer baja bar- bara barb barc bare barr bart bata batc bate batt bbbb bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcec bcer bcet bcra bctc bear beat beba bebb bebe beca beeb beej beer beet beja bera berc bere berr bert beta betc bete bett bjcc bjec brab brac brae braj brat brca brcb brce brea breb brec bree brer bret brje brrr brtc btaa btcc btec btrc btrt bttb caaa caab caac caat caba cabe cac- caca cacc cace cacr caec caer caja cara carb carc care carj carr cart cat- cata catb catc cate catt cbac cbar cbat cbbc cbca cbcc cbce cbcr cbct cbea cbec cbee cber cbet cbre cbrj cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccee ccra ccrc ccre ccrt cctb cctc cctt ceac cear ceat ceba cec- ceca cece cect ceeb ceec ceja cejc cer- cera cerc cere cert cet- ceta cete cjar cjbc cjca cjcb cjcj cjrb cjrc cjrj cjtr crab crac craj crar crat crbc crca crcc crce crcr cre- crea creb crec cree cret crrt crtc ctab ctae ctba ctca ctec ctrc ctta eaba eaca eacc eaec eara earb eare eart eata eate ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecra ecrc ecrr ect- ecta ectc eeca eeea eeee eera eerc eeta eetc eete ejer erat erba erbb erbe erca ercc erce ereb erec erer eret erja erra errc erre erta etat etbc etbr etcc etec etee eter etra etre etta ette jaar jaba jabr jaca jacc jace jaer jaja jara jarc jare jarr jart jbaa jbar jcbc jccc jcrc jear jeat jebb jebe jeer jeet jera jere jert jeta jetb jete jett jjar jjcc jrbr jrtc jtac jtar jtbc jtcc raab raaj raat raba rabb rabe rac- raca racc race ract raec raer raja raje rara rarb rare rata rate ratt rbbb rbbr rcac rcbc rccb rccc rcet rctc rea- reac reae rear reat reba rebb rebe reca recc rece recr rect reeb reet reja rera rere rert reta rete retr rett rrat rrrr rtca rtcc rtce rtee taa- taar taat taba tabb tabc tabe taca tacc tace tact taec taer tara tarb tarc tare tarr tart tata tatb tate tatr tatt tbar tbca tbcb tbcc tbce tbrb tbta tcca tccc tctc teac tear teat teba teca tecr tect teec teej teer teet teja ter- tera terc tere terj terr teta tete tetr tett traa trab trac trae trat trca trcc tre- trea trec tree tret trra trtc trte trtr ttab ttbb tter tttt

-aaa- -tree aaace aaaee aaarc aaata aabaa aabba aabra aacbc aacjc aacte abaab ababa ababe abaca abaer abaja abara abare abate abbac abbaj abbar abbat abbet abccc abear abeat abeba abebe abece abeer abeet abera abere aberr abert abjar abrac abrar abtaa abtar acaca acacb acar- acara acare acate accra aceae acera acerb acet- aceta acrab acrea acree act-r actar acter actra aeaea aebbe aetat aeter ajaja ajara ajeeb ajtte ar-ab ara-c araat arab- araba arabe araca arace araea arara arare arata arate arbab arbar arbat arbee arber arbet arbre arcae arcee arct-