-er a-a a-b a-c aaa aab aac aae aak aam aar aas ab- aba abb abc abe abk abm abr abs ac- aca acb acc ace ack acm acr acs aea aeb aec aee aek aem aer aes aka akb akc ake akk akm akr aks ama amb amc ame amk amm amr ams ar- ara arb arc are ark arm arr ars as- asa asb asc ase ask asm asr ass baa bab bac bae bak bam bar bas bba bbb bbc bbe bbk bbm bbr bbs bca bcb bcc bce bck bcm bcr bcs be- bea beb bec bee bek bem ber bes bka bkb bkc bke bkk bkm bkr bks bma bmb bmc bme bmk bmm bmr bms bra brb bre brk brm brr brs bsa bsb bsc bse bsk bsm bsr bss c-- caa cab cac cae cak cam car cas cba cbb cbc cbe cbk cbm cbr cbs cca ccb ccc cce cck ccm ccr ccs ce- cea ceb cec cee cek cem cer ces cka ckb ckc ckm cks cma cmb cmc cme cmk cmm cmr cms cra crb crc cre crk crm crr crs csa csb csc cse csk csm csr css eaa eab eac eae eak eam ear eas eba ebb ebc ebe ebk ebm ebr ebs ec- eca ecb ecc ece eck ecm ecr ecs eea eeb eec eee eek eem eer ees eka ekb ekc eke ekr eks em- ema emb emc eme emk emm emr ems era erb erc ere erk erm err ers es- esa esb esc ese esk esm esr ess ka- kaa kab kac kae kak kam kar kas kba kbb kbc kbe kbk kbm kbr kbs kca kcb kcc kce kck kcm kcr kcs ke- kea keb kec kee kek kem ker kes kkb kkc kke kkk kkm kkr kks kma kmb kmc kme kmk kmm kms kra krc krk krr krs ksa ksb ksc kse ksk ksm ksr kss m-r maa mab mac mae mak mam mar mas mba mbb mbc mbe mbk mbm mbr mbs mc- mca mcb mcc mce mck mcm mcr mcs mea meb mec mee mek mem mer mes mka mkb mkc mke mkk mkm mkr mks mma mmb mmc mme mmk mmm mmr mms mra mrb mrc mre mrk mrm mrr mrs msa msb msc mse msk msm msr mss ra- raa rab rac rae rak ram rar ras rba rbb rbc rbe rbk rbm rbr rbs rca rcb rcc rce rcm rcr rcs re- rea reb rec ree rek rem rer res rkb rkc rke rkk rkm rks rma rmb rmc rme rmm rmr rms rra rrb rrc rrk rrm rrr rrs rsa rsb rsc rse rsk rsm rsr rss saa sab sac sae sak sam sar sas sba sbb sbc sbe sbk sbm sbr sbs sca scb scc sce sck scm scr scs se- sea seb sec see sek sem ser ses sk- ska skb skc ske skk skm skr sks sma smb smc sme smk smm smr sms sr- sra srb src sre srk srm srr srs ss- ssa ssb ssc sse ssk ssm ssr sss

-ase a-ak a-be aaaa aaab aaac aaae aaam aaar aaas aaba aabb aabc aabm aaca aacb aacc aace aack aacm aacr aacs aaea aaec aaem aaes aaka aake aama aamb aamc aame aamr aams aara aarc aare aarm aars aasa aasc aase aasm aass abaa abab abac abae abak abam abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcr abcs abec abee aber abes abma abmb abmc abms abra abrc abrs abs- absa abse abss acaa acab acac acae acar acas acba acca accc acce accm accs ace- acea acec acek acem acer aces acke acks acma acmc acme acms acr- acra acrc acre acrm acrr acrs acsa acsc acse acsm acss aeac aeas aebs aecb aeer aeka aer- aera aerc aers aesc aess akaa akae akam akar akas akca akee aker akes akka akr- akra akre aksa amaa amac amae amam amar amas amb- amba ambe ambr ambs amca amcc amcs amec amee amer ames amka amm- amma amme amra amrc amsa amsc amss arab arac arae arak aram arar aras arba arbe arbs arc- arca arce arcm arcs area arec aree arek arem ares arka arke arks arma armc arme armm arms arr- arra arrc arre arrk arrr arrs ars- arsa arsc arse arsk asaa asab asac asae asak asam asar asas asba asbm asc- asca ascb ascc asce ascr asea asec asee asek asem aser ases aska aske askr asks asma asme asmm asmr asms asra asrc asrm asrs assa assc asse assk assr asss baaa baak baam baar baas baba babb babe babm babr babs bac- baca bacc bace back bacs baek baer baes bak- baka bake bakr baks bama bamb bamc bame bamm bams bar- bara barb barc bare bark barm barr bars basa basc base bask bass bbas bbbb bbbs bbcm bbeb bbrc bcaa bcam bcar bcas bcbc bcbs bcca bccc bccm bccs bcec bcer bces bcma bcms bcra bcrs bcsa bcsc bcsm bcss beak beam bear beas beba bebb bebe beca beck becs beeb beek beem beer bees beka beke beks bema beme bera berc bere berk berm berr bers bes- besa bese besk besm bess bmaa bmce brab brac brae brak bram bras brca brcb brce brea breb brec bree brek brem brer bres brka brkb brmc brrm brrr brrs brsb brsr bsaa bsac bsam bsas bscs bsea bseb bsec bsee bser bses bsms bsra bsrm bssc bsse bssm caaa caab caac caam caas caba cabe cabs cac- caca cacc cace cack cacm cacr caec caem caer caes caka cake cama camb camc came camk camm cams cara carb carc care cark carm carr cars casa casb casc case cask casm casr cass cbac cbar cbbc cbbs cbca cbcc cbce cbcm cbcr cbcs cbea cbec cbee cber cbka cbkm cbkr cbme cbms cbre cbrm cbsa cbsc cbse cbsm ccaa ccab ccac ccam ccar ccas ccba ccbc ccca cccb cccc