a-a a-b a-c aaa aab aac aae aak aas ab- aba abb abc abe abk abs ac- aca acb acc ace ack acs aea aeb aec aee aek aes aka akb akc ake akk aks as- asa asb asc ase ask ass baa bab bac bae bak bas bba bbb bbc bbe bbk bbs bca bcb bcc bce bck bcs be- bea beb bec bee bek bes bka bkb bkc bke bkk bks bsa bsb bsc bse bsk bss c-- caa cab cac cae cak cas cba cbb cbc cbe cbk cbs cca ccb ccc cce cck ccs ce- cea ceb cec cee cek ces cka ckb ckc cks csa csb csc cse csk css eaa eab eac eae eak eas eba ebb ebc ebe ebk ebs ec- eca ecb ecc ece eck ecs eea eeb eec eee eek ees eka ekb ekc eke eks es- esa esb esc ese esk ess ka- kaa kab kac kae kak kas kba kbb kbc kbe kbk kbs kca kcb kcc kce kck kcs ke- kea keb kec kee kek kes kkb kkc kke kkk kks ksa ksb ksc kse ksk kss saa sab sac sae sak sas sba sbb sbc sbe sbk sbs sca scb scc sce sck scs se- sea seb sec see sek ses sk- ska skb skc ske skk sks ss- ssa ssb ssc sse ssk sss

-ase a-ak a-be aaaa aaab aaac aaae aaas aaba aabb aabc aaca aacb aacc aace aack aacs aaea aaec aaes aaka aake aasa aasc aase aass abaa abab abac abae abak abas abb- abba abbb abbe abbs abca abcb abcc abcs abec abee abes abs- absa abse abss acaa acab acac acae acas acba acca accc acce accs ace- acea acec acek aces acke acks acsa acsc acse acss aeac aeas aebs aecb aeka aesc aess akaa akae akas akca akee akes akka aksa asaa asab asac asae asak asas asba asc- asca ascb ascc asce asea asec asee asek ases aska aske asks assa assc asse assk asss baaa baak baas baba babb babe babs bac- baca bacc bace back bacs baek baes bak- baka bake baks basa basc base bask bass bbas bbbb bbbs bbeb bcaa bcas bcbc bcbs bcca bccc bccs bcec bces bcsa bcsc bcss beak beas beba bebb bebe beca beck becs beeb beek bees beka beke beks bes- besa bese besk bess bsaa bsac bsas bscs bsea bseb bsec bsee bses bssc bsse caaa caab caac caas caba cabe cabs cac- caca cacc cace cack caec caes caka cake casa casb casc case cask cass cbac cbbc cbbs cbca cbcc cbce cbcs cbea cbec cbee cbka cbsa cbsc cbse ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccee ccsa ccss ceac ceas ceba cebs cec- ceca cece cecs ceeb ceec cees ceke cesa cesc cese cess ckac ckbc ckbe ckck ckcs cksa cksb csaa csab csac csak csas cscb cscc csce cscs csea csec csee cska csks cssa csse eaba eaca eacc eaec easa ease ebac ebba ebbc ebbs ebcc ebes ebsa ecaa ecac ecbc ecbe ecca eccb eccc ecce eces ecka ecks ecsa ecsc ecse ecss eeca eecs eeea eeee eees eeka eeke eeks eese eesk eka- ekab ekeb ekek ekes ekka esab esac esas esba esbs esca escb esce escs esea esee esek eses eska eske esks essa esse kaaa kaab kaak kaas kaba kabb kabc kabe kacb kacc kace kacs kaes kaka kakc kake kakk kaks kas- kasa kasb kasc kase kask kass kbaa kbab kbac kbae kbak kbas kbba kbbb kbbc kbbe kbbk kbbs kbca kbcb kbce kbck kbcs kbeb kbec kbee kbek kbes kbkb kbkk kbsa kbsb kbsk kbss kcaa kcab kcac kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kcea kceb kcec kcee kckc kckk kcsa kcsb kcsc kcse kcss kea- keak keas keba kebb kebc kebe keca keck keek kees keka kekb kekc keke keks kesa kesb kesc kesk kess kkaa kkac kkba kkbb kkbe kkbs kkcb kkck kkcs kkea kkkk kksa kkse kkss ksab ksac ksak ksas ksba ksbc ksbs ksca kscb ksce ksck kscs ksea ksec ksee ksek kska kskb kske kskk ksks kssa ksse ksss sa-c saab saac saae saak saas saba sabb sabc sabe sabs saca sacc sace sack sacs saeb saek saes saka sakb sake sakk saks sasa sasc sase sask sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbse scaa scab scac scak scas scba sccc scce sccs scea scec scee sck- scsa scsc se-c se-e se-k se-s seaa seab seac seak seas seba sebe sebs sec- seca secc sece seck secs seea seeb seec seek sees seka seke sekk sesa sesc sese sess skab skac skee skes skss ssaa ssab ssac ssas ssca sscc ssce sscs ssec ssee sses sssa sssb sssc ssss

-aaa- a-sea aaaas aaace aaaee aaasa aaass aabaa aabba aacbc aaces aacsa aacsb aacss aasee abaab ababa ababe ababs abaca aback abacs abaka abake abasa abase abask abass abbac abbas abbes abcas abccc abeba abebe abece abees absee acaca acacb acack acake acase acass accas aceae ackee aeaea aebbe aka-e akaba akasa akbas akce akees akkas asaak asaba asabc asack asaka asake asasa asbak asbca asce- ascea aseek askas askes asksa assab assac assas assce asse- asses b-cas baabe baake babak babas babbs babec babee babek babes babka babsk bacab bacas bacca bacea back- backa backe backs bakea bakes bakka bakke baksa basab basak basca bases baska baske basks bassa basse bbbee beack beaks bease bebek bebes becak becca becke becks beeac beebe beebs beeke bekaa bekas bekes bekka bekke besas besee beska bessa besse bsaba c-a-c ca-ca caaba cabas cabse cacak cacas cacks caec- caeca cakes casas casca case- casea cases casks casse ccass ccccc ceace ceaes cease cebas cebec cebes cecka ceeac ceese cesce ceska cesse csaba cscae eases easse ecasa eecca eecke eeeee ekkas escae escas esces eseka esses essse kaaba kaaks kabaa kabab kabak kabas kabba kabsa kacee kakae kakas kakka kakke kasab kasak kasba kasce kaseb kaska kassa kebab kebbe