-er a-a a-b a-c aaa aab aac aae aar aas aau aax ab- aba abb abc abe abr abs abu abx ac- aca acb acc ace acr acs acu acx aea aeb aec aee aer aes aeu aex ar- ara arb arc are arr ars aru arx as- asa asb asc ase asr ass asu asx au- aua aub auc aue aur aus aux ax- axa axe axr axs axx b-u baa bab bac bae bar bas bau bax bba bbb bbc bbe bbr bbs bbu bbx bca bcb bcc bce bcr bcs bcu bcx be- bea beb bec bee ber bes beu bex bra brb bre brr brs bru brx bsa bsb bsc bse bsr bss bsu bsx bua bub buc bue bur bus buu bux bxb bxx c-- caa cab cac cae car cas cau cax cba cbb cbc cbe cbr cbs cbu cbx cca ccb ccc cce ccr ccs ccu ccx ce- cea ceb cec cee cer ces ceu cex cra crb crc cre crr crs cru crx csa csb csc cse csr css csu csx cua cub cuc cue cur cus cuu cxc cxr cxs cxx eaa eab eac eae ear eas eau eax eba ebb ebc ebe ebr ebs ebu ebx ec- eca ecb ecc ece ecr ecs ecu ecx eea eeb eec eee eer ees eex era erb erc ere err ers eru es- esa esb esc ese esr ess esu esx eu- eua eub euc eue eur eus eux ex- exa exc exe exr exs exu exx ra- raa rab rac rae rar ras rau rax rba rbb rbc rbe rbr rbs rbu rbx rca rcb rcc rce rcr rcs rcu rcx re- rea reb rec ree rer res reu rex rra rrb rrc rrr rrs rru rsa rsb rsc rse rsr rss rsu rsx rua rub ruc rue rur rus ruu rux rxr rxs saa sab sac sae sar sas sau sax sba sbb sbc sbe sbr sbs sbu sbx sca scb scc sce scr scs scu scx se- sea seb sec see ser ses seu sex sr- sra srb src sre srr srs srx ss- ssa ssb ssc sse ssr sss ssu ssx sua sub suc sue sur sus suu sux sxc sxs sxu ua- uaa uab uac uae uar uas uau uba ubb ubc ube ubr ubs ubu ubx uca ucb ucc uce ucr ucs ucu uea ueb uec uee uer ues ur- ura urb urc ure urr urs uru urx usa usb usc use usr uss usu usx uua uuc uue uur uus uuu uxb uxc uxr uxu xaa xac xar xas xau xbc xbe xbr xbx xcb xcr xcx xee xer xes xeu xex xrc xrx xsa xsb xsc xss xue xus xxx

-ase a-be aaaa aaab aaac aaae aaar aaas aaba aabb aabc aaca aacb aacc aace aacr aacs aacu aaea aaec aaes aara aarc aare aars aaru aasa aasc aase aass aasu aaus abaa abab abac abae abar abas abau abax abb- abba abbb abbe abbr abbs abca abcb abcc abcr abcs abec abee aber abes abra abrc abrs abs- absa abse abss absu abua abue abus acaa acab acac acae acar acas acba acca accc acce accs accu ace- acea acec acer aces acr- acra acrc acre acrr acrs acsa acsc acse acss acu- acue acur acus aeac aeas aebs aecb aeer aer- aera aerc aers aesc aess arab arac arae arar aras arau arax arba arbe arbs arc- arca arce arcs area arec aree ares areu arex arr- arra arrc arre arrr arrs arru ars- arsa arsc arse arsu arua arub arue asaa asab asac asae asar asas asau asba asbu asc- asca ascb ascc asce ascr ascx asea asec asee aser ases asra asrc asrs asru assa assc asse assr asss assu asub asue asur asus auaa aube auca auce auer aur- aura aure ausa ause ausu auxa axar axce axer axes axse ba-x baaa baar baas baba babb babe babr babs babu bac- baca bacc bace bacs baer baes bar- bara barb barc bare barr bars baru barx basa basc base bass basu bau- baur baux bbas bbau bbbb bbbs bbeb bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcec bcer bces bcra bcrs bcru bcsa bcsc bcss bcuc bear beas beau beba bebb bebe beca becs becu beeb beer bees bera berc bere berr bers beru bes- besa bese bess beur beux brab brac brae bras brau brax brca brcb brce brea breb brec bree brer bres brex brrr brrs brsb brsr bruc brue brus brux bsaa bsac bsas bscs bsea bseb bsec bsee bser bses bsra bssc bsse buar buba bubb bube bubs bubu buca bucc buce bucs bucu buea buer bueu bur- bura burb bure burr burs buru busa busc buse buss busu busx buus buxa caaa caab caac caas caba cabe cabs cabu cac- caca cacc cace cacr caec caer caes caeu caex cara carb carc care carr cars carx casa casb casc case casr cass casu cauc caus caux caxa cbac cbar cbax cbbc cbbs cbca cbcc cbce cbcr cbcs cbcu cbea cbec cbee cber cbre cbsa cbsc cbse cbus cbux cbxa ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccee ccra ccrc ccre ccrs ccsa ccss ccuc ccus ceac cear ceas ceba cebs cebu cec- ceca cece cecs ceeb ceec cees cer- cera cerc cere cers cesa cesc cese cesr cess ceux cexe crab crac crar cras crau crax crbc crbu crca crcc crce crcr cre- crea creb crec cree cres creu crex crsa crss crub crue crus crux csaa csab csac csar csas cscb cscc csce cscr cscs csea csec csee cser csra csrc csrs cssa csse cssr csua csur csus cuau cub- cuba cubb cube cubs cuca cucc cuce cuer cues cura curb cure curr curs cusa cusb cuss cusu cxxx eaba eaca eacc eaec eara earb eare ears easa ease eaus eaux ebac ebba ebbc ebbr ebbs ebcc eber ebes ebru ebsa ebur ebus ecaa ecac ecar ecbc