a-a a-b a-c aaa aab aac aae aak aam aas ab- aba abb abc abe abk abm abs ac- aca acb acc ace ack acm acs aea aeb aec aee aek aem aes aka akb akc ake akk akm aks ama amb amc ame amk amm ams as- asa asb asc ase ask asm ass baa bab bac bae bak bam bas bba bbb bbc bbe bbk bbm bbs bca bcb bcc bce bck bcm bcs be- bea beb bec bee bek bem bes bka bkb bkc bke bkk bkm bks bma bmb bmc bme bmk bmm bms bsa bsb bsc bse bsk bsm bss c-- caa cab cac cae cak cam cas cba cbb cbc cbe cbk cbm cbs cca ccb ccc cce cck ccm ccs ce- cea ceb cec cee cek cem ces cka ckb ckc ckm cks cma cmb cmc cme cmk cmm cms csa csb csc cse csk csm css eaa eab eac eae eak eam eas eba ebb ebc ebe ebk ebm ebs ec- eca ecb ecc ece eck ecm ecs eea eeb eec eee eek eem ees eka ekb ekc eke eks em- ema emb emc eme emk emm ems es- esa esb esc ese esk esm ess ka- kaa kab kac kae kak kam kas kba kbb kbc kbe kbk kbm kbs kca kcb kcc kce kck kcm kcs ke- kea keb kec kee kek kem kes kkb kkc kke kkk kkm kks kma kmb kmc kme kmk kmm kms ksa ksb ksc kse ksk ksm kss maa mab mac mae mak mam mas mba mbb mbc mbe mbk mbm mbs mc- mca mcb mcc mce mck mcm mcs mea meb mec mee mek mem mes mka mkb mkc mke mkk mkm mks mma mmb mmc mme mmk mmm mms msa msb msc mse msk msm mss saa sab sac sae sak sam sas sba sbb sbc sbe sbk sbm sbs sca scb scc sce sck scm scs se- sea seb sec see sek sem ses sk- ska skb skc ske skk skm sks sma smb smc sme smk smm sms ss- ssa ssb ssc sse ssk ssm sss

-ase a-ak a-be aaaa aaab aaac aaae aaam aaas aaba aabb aabc aabm aaca aacb aacc aace aack aacm aacs aaea aaec aaem aaes aaka aake aama aamb aamc aame aams aasa aasc aase aasm aass abaa abab abac abae abak abam abas abb- abba abbb abbe abbs abca abcb abcc abcs abec abee abes abma abmb abmc abms abs- absa abse abss acaa acab acac acae acas acba acca accc acce accm accs ace- acea acec acek acem aces acke acks acma acmc acme acms acsa acsc acse acsm acss aeac aeas aebs aecb aeka aesc aess akaa akae akam akas akca akee akes akka aksa amaa amac amae amam amas amb- amba ambe ambs amca amcc amcs amec amee ames amka amm- amma amme amsa amsc amss asaa asab asac asae asak asam asas asba asbm asc- asca ascb ascc asce asea asec asee asek asem ases aska aske asks asma asme asmm asms assa assc asse assk asss baaa baak baam baas baba babb babe babm babs bac- baca bacc bace back bacs baek baes bak- baka bake baks bama bamb bamc bame bamm bams basa basc base bask bass bbas bbbb bbbs bbcm bbeb bcaa bcam bcas bcbc bcbs bcca bccc bccm bccs bcec bces bcma bcms bcsa bcsc bcsm bcss beak beam beas beba bebb bebe beca beck becs beeb beek beem bees beka beke beks bema beme bes- besa bese besk besm bess bmaa bmce bsaa bsac bsam bsas bscs bsea bseb bsec bsee bses bsms bssc bsse bssm caaa caab caac caam caas caba cabe cabs cac- caca cacc cace cack cacm caec caem caes caka cake cama camb camc came camk camm cams casa casb casc case cask casm cass cbac cbbc cbbs cbca cbcc cbce cbcm cbcs cbea cbec cbee cbka cbkm cbme cbms cbsa cbsc cbse cbsm ccaa ccab ccac ccam ccas ccba ccbc ccca cccb cccc cccm cccs ccee cckm ccma ccmb ccmc ccmm ccms ccsa ccss ceac ceas ceba cebs cec- ceca cece cecm cecs ceeb ceec ceem cees ceke cema cemb ceme cemm cems cesa cesc cese cess ckac ckbc ckbe ckck ckcm ckcs ckem cksa cksb cmaa cmac cmas cmba cmbc cmbs cmcc cmcs cmea cmec cmes cmmb cmmc cmms cmsa cmsc cmse csaa csab csac csak csas csbm cscb cscc csce cscs csea csec csee csem cska csks csma csmc cssa csse cssm eaba eaca eacc eaec eama eame eams easa ease ebac ebam ebba ebbc ebbs ebcc ebes ebsa ecaa ecac ecam ecbc ecbe ecca eccb eccc ecce eccm ecem eces ecka ecks ecma ecsa ecsc ecse ecss eeca eecs eeea eeee eees eeka eeke eeks eems eese eesk eka- ekab ekam ekeb ekek ekes ekka ekma emac emae emam emas emba embe embs emcc emcs emek emes emks emma emme emms emsa emse esab esac esam esas esba esbs esca escb esce escm escs esea esee esek esem eses eska eske esks esma esme essa esse kaaa kaab kaak kaam kaas kaba kabb kabc kabe kacb kacc kace kacs kaes kaka kakc kake kakk kakm kaks kam- kama kamb kamc kame kamm kams kas- kasa kasb kasc kase kask kasm kass kbaa kbab kbac kbae kbak kbam kbas kbba kbbb kbbc kbbe kbbk kbbm kbbs kbca kbcb kbce kbck kbcs kbeb kbec kbee kbek kbes kbkb kbkk kbmb kbmc kbme kbms kbsa kbsb kbsk kbsm kbss kcaa kcab kcac kcam kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kcea kceb kcec kcee kckc kckk kckm kcmb kcmc kcme kcmk kcmm kcms kcsa kcsb kcsc kcse kcsm kcss kea- keak keam keas keba kebb kebc kebe keca keck keek keem kees keka kekb kekc keke keks kema kemb kemc keme kemm kems kesa kesb kesc kesk kess kkaa kkac kkam kkba kkbb kkbe kkbs kkcb kkck kkcm kkcs kkea kkkk kkma kkmc kkmk kkms kksa kkse kksm