-er a-a a-b a-c aaa aab aac aae aak aar aas aau ab- aba abb abc abe abk abr abs abu ac- aca acb acc ace ack acr acs acu aea aeb aec aee aek aer aes aeu aka akb akc ake akk akr aks aku ar- ara arb arc are ark arr ars aru as- asa asb asc ase ask asr ass asu au- aua aub auc aue auk aur aus b-u baa bab bac bae bak bar bas bau bba bbb bbc bbe bbk bbr bbs bbu bca bcb bcc bce bck bcr bcs bcu be- bea beb bec bee bek ber bes beu bka bkb bkc bke bkk bkr bks bra brb bre brk brr brs bru bsa bsb bsc bse bsk bsr bss bsu bua bub buc bue buk bur bus buu c-- caa cab cac cae cak car cas cau cba cbb cbc cbe cbk cbr cbs cbu cca ccb ccc cce cck ccr ccs ccu ce- cea ceb cec cee cek cer ces ceu cka ckb ckc cks cra crb crc cre crk crr crs cru csa csb csc cse csk csr css csu cua cub cuc cue cuk cur cus cuu eaa eab eac eae eak ear eas eau eba ebb ebc ebe ebk ebr ebs ebu ec- eca ecb ecc ece eck ecr ecs ecu eea eeb eec eee eek eer ees eka ekb ekc eke ekr eks eku era erb erc ere erk err ers eru es- esa esb esc ese esk esr ess esu eu- eua eub euc eue eur eus ka- kaa kab kac kae kak kar kas kau kba kbb kbc kbe kbk kbr kbs kbu kca kcb kcc kce kck kcr kcs kcu ke- kea keb kec kee kek ker kes kkb kkc kke kkk kkr kks kku kra krc krk krr krs kru ksa ksb ksc kse ksk ksr kss ksu kub kuc kue kuk kur kus kuu ra- raa rab rac rae rak rar ras rau rba rbb rbc rbe rbk rbr rbs rbu rca rcb rcc rce rcr rcs rcu re- rea reb rec ree rek rer res reu rkb rkc rke rkk rks rku rra rrb rrc rrk rrr rrs rru rsa rsb rsc rse rsk rsr rss rsu rua rub ruc rue ruk rur rus ruu saa sab sac sae sak sar sas sau sba sbb sbc sbe sbk sbr sbs sbu sca scb scc sce sck scr scs scu se- sea seb sec see sek ser ses seu sk- ska skb skc ske skk skr sks sku sr- sra srb src sre srk srr srs ss- ssa ssb ssc sse ssk ssr sss ssu sua sub suc sue suk sur sus suu ua- uaa uab uac uae uak uar uas uau uba ubb ubc ube ubk ubr ubs ubu uca ucb ucc uce uck ucr ucs ucu uea ueb uec uee uer ues uka ukb ukc uke ukk ukr uku ur- ura urb urc ure urk urr urs uru usa usb usc use usk usr uss usu uua uuc uue uur uus uuu

-ase a-ak a-be aaaa aaab aaac aaae aaar aaas aaba aabb aabc aaca aacb aacc aace aack aacr aacs aacu aaea aaec aaes aaka aake aaku aara aarc aare aars aaru aasa aasc aase aass aasu aaus abaa abab abac abae abak abar abas abau 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 abuk abus acaa acab acac acae acar acas acba acca accc acce accs accu ace- acea acec acek acer aces acke acks acr- acra acrc acre acrr acrs acsa acsc acse acss acu- acue acur acus aeac aeas aebs aecb aeer aeka aer- aera aerc aers aesc aess akaa akae akar akas akca akee aker akes akeu akka akku akr- akra akre aksa aksu akua arab arac arae arak arar aras arau arba arbe arbs arc- arca arce arcs area arec aree arek ares areu arka arke arks arr- arra arrc arre arrk arrr arrs arru ars- arsa arsc arse arsk arsu arua arub arue asaa asab asac asae asak asar asas asau asba asbu asc- asca ascb ascc asce ascr asea asec asee asek aser ases aska aske askr asks asra asrc asrs asru assa assc asse assk assr asss assu asub asue asur asus auaa aube auca auce auer auke auks aur- aura aure ausa ause ausu baaa baak baar baas baba babb babe babr babs babu bac- baca bacc bace back bacs baek baer baes bak- baka bake bakr baks baku bar- bara barb barc bare bark barr bars baru basa basc base bask bass basu bau- bauk baur bbas bbau bbbb bbbs bbeb bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcec bcer bces bcra bcrs bcru bcsa bcsc bcss bcuc beak bear beas beau beba bebb bebe beca beck becs becu beeb beek beer bees beka beke beks bera berc bere berk berr bers beru bes- besa bese besk bess beuk beur brab brac brae brak bras brau brca brcb brce brea breb brec bree brek brer bres brka brkb brrr brrs brsb brsr bruc brue brus bsaa bsac bsas bscs bsea bseb bsec bsee bser bses bsra bssc bsse buar buba bubb bube bubs bubu buca bucc buce buck bucs bucu buea buer bueu buka buke bukk buku bur- bura burb bure burk burr burs buru busa busc buse busk buss busu buus caaa caab caac caas caba cabe cabs cabu cac- caca cacc cace cack cacr caec caer caes caeu caka cake cara carb carc care cark carr cars casa casb casc case cask casr cass casu cauc cauk caus cbac cbar cbbc cbbs cbca cbcc cbce cbcr cbcs cbcu cbea cbec cbee cber cbka cbkr cbre cbsa cbsc cbse cbus 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