-er a-a a-b a-c a-t aaa aab aac aae aar aas aat aax ab- aba abb abc abe abr abs abt abx ac- aca acb acc ace acr acs act acx aea aeb aec aee aer aes aet aex ar- ara arb arc are arr ars art arx as- asa asb asc ase asr ass ast asx at- ata atb atc ate atr ats att atx ax- axa axe axr axs axt axx baa bab bac bae bar bas bat bax bba bbb bbc bbe bbr bbs bbt bbx bca bcb bcc bce bcr bcs bct bcx be- bea beb bec bee ber bes bet bex bra brb bre brr brs brt brx bsa bsb bsc bse bsr bss bst bsx bta btb btc bte btr bts btt btx bxb bxx c-- caa cab cac cae car cas cat cax cba cbb cbc cbe cbr cbs cbt cbx cca ccb ccc cce ccr ccs cct ccx ce- cea ceb cec cee cer ces cet cex cra crb crc cre crr crs crt crx csa csb csc cse csr css cst csx cta ctb ctc cte ctr cts ctt ctx cxc cxr cxs cxt cxx eaa eab eac eae ear eas eat eax eba ebb ebc ebe ebr ebs ebt ebx ec- eca ecb ecc ece ecr ecs ect ecx eea eeb eec eee eer ees eet eex era erb erc ere err ers ert es- esa esb esc ese esr ess est esx eta etb etc ete etr ets ett etx ex- exa exc exe exr exs ext exx ra- raa rab rac rae rar ras rat rax rba rbb rbc rbe rbr rbs rbt rbx rca rcb rcc rce rcr rcs rct rcx re- rea reb rec ree rer res ret rex rra rrb rrc rrr rrs rrt rsa rsb rsc rse rsr rss rst rsx rta rtb rtc rte rtr rts rtt rtx rxr rxs saa sab sac sae sar sas sat sax sba sbb sbc sbe sbr sbs sbt sbx sca scb scc sce scr scs sct scx se- sea seb sec see ser ses set sex sr- sra srb src sre srr srs srt srx ss- ssa ssb ssc sse ssr sss sst ssx sta stb stc ste str sts stt stx sxc sxs sxt t-x taa tab tac tae tar tas tat tax tba tbb tbc tbe tbr tbs tbt tca tcb tcc tce tcr tcs tct tcx te- tea teb tec tee ter tes tet tex tra trb trc tre trr trs trt trx tsa tsb tsc tse tsr tss tst tsx tta ttb ttc tte ttr tts ttt ttx txe txs txt xaa xac xar xas xat xbc xbe xbr xbx xcb xcr xcx xee xer xes xet xex xrc xrt xrx xsa xsb xsc xss xst xtc xtr xts xtx xxx

-ase a-be aaaa aaab aaac aaae aaar aaas aaba aabb aabc aabt aaca aacb aacc aace aacr aacs aact aaea aaec aaes aara aarc aare aars aart aasa aasc aase aass aast aata aatc aatt abaa abab abac abae abar abas abat abax abb- abba abbb abbe abbr abbs abbt abca abcb abcc abcr abcs abct abec abee aber abes abet abra abrc abrs abs- absa abse abss abta abts ac-t acaa acab acac acae acar acas acat acba acca accc acce accs acct ace- acea acec acer aces acet acr- acra acrc acre acrr acrs acsa acsc acse acss acst acta actc acte acts actt aeac aeas aebs aecb aect aeer aer- aera aerc aers aesc aess aest aeta aetc aetr aett aetx arab arac arae arar aras arat arax arba arbe arbs arc- arca arce arcs arct area arec aree ares aret arex arr- arra arrc arre arrr arrs arrt ars- arsa arsc arse arst arta artc arte artr arts artx asaa asab asac asae asar asas asat asba asc- asca ascb ascc asce ascr asct ascx asea asec asee aser ases aset asra asrc asrs assa assc asse assr asss asst asta astb astc aste astr asts at-t at-x ataa atab atac atae atar atas atat atax atbs atca atcc atcr atcs atea atec atee ater ates atex atra atrc atre atrx atsb atsc atse atst atta atte attr atts axar axat axce axer axes axse ba-x baaa baar baas baat baba babb babe babr babs bac- baca bacc bace bacs bact baer baes bar- bara barb barc bare barr bars bart barx basa basc base bass bast bata batc bate bats batt baxt bbas bbbb bbbs bbeb bbet bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bcec bcer bces bcet bcra bcrs bcsa bcsc bcss bctc bcts bear beas beat beba bebb bebe beca becs beeb beer bees beet bera berc bere berr bers bert bes- besa bese bess best beta betc bete bets bett brab brac brae bras brat brax brca brcb brce brea breb brec bree brer bres bret brex brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bscs bsea bseb bsec bsee bser bses bset bsra bssc bsse bsts btaa btcc btcs btcx btec btex btrc btrt btss bttb caaa caab caac caas caat caba cabe cabs cac- caca cacc cace cacr caec caer caes caex cara carb carc care carr cars cart carx casa casb casc case casr cass cast cat- cata catb catc cate cats catt caxa cbac cbar cbat cbax cbbc cbbs cbca cbcc cbce cbcr cbcs cbct cbea cbec cbee cber cbet cbre cbrt cbsa cbsc cbse cbta cbtc cbxa ccaa ccab ccac ccar ccas ccat ccba ccbc ccca cccb cccc cccs ccee ccra ccrc ccre ccrs ccrt ccsa ccss ccst cctb cctc cctt ceac cear ceas ceat ceba cebs cec- ceca cece cecs cect ceeb ceec cees cer- cera cerc cere cers cert cesa cesc cese cesr cess cest cet- ceta cete cets cexe crab crac crar cras crat crax crbc crca crcc crce crcr cre- crea creb crec cree cres cret crex crrt crsa crss crst crtc crts csaa csab csac csar csas csat