a-a a-b a-c aaa aab aac aad aae aak aas ab- aba abb abc abd abe abk abs ac- aca acb acc acd ace ack acs ad- ada adb adc add ade adk ads aea aeb aec aed aee aek aes aka akb akc akd ake akk aks as- asa asb asc asd ase ask ass baa bab bac bad bae bak bas bba bbb bbc bbd bbe bbk bbs bca bcb bcc bcd bce bck bcs bda bdb bdc bdd bde bdk bds be- bea beb bec bed bee bek bes bka bkb bkc bke bkk bks bsa bsb bsc bsd bse bsk bss c-- caa cab cac cad cae cak cas cba cbb cbc cbd cbe cbk cbs cca ccb ccc ccd cce cck ccs cda cdb cdc cdd cde cdk cds ce- cea ceb cec ced cee cek ces cka ckb ckc ckd cks csa csb csc csd cse csk css daa dab dac dad dae dak das dba dbb dbc dbd dbe dbk dbs dca dcb dcc dcd dce dck dcs dda ddb ddc ddd dde ddk dds de- dea deb dec ded dee dek des dka dkb dkc dke dkk dks dsa dsb dsc dsd dse dsk dss eaa eab eac ead eae eak eas eba ebb ebc ebd ebe ebk ebs ec- eca ecb ecc ecd ece eck ecs ed- eda edb edc edd ede edk eds eea eeb eec eed eee eek ees eka ekb ekc ekd eke eks es- esa esb esc esd ese esk ess ka- kaa kab kac kad kae kak kas kba kbb kbc kbd kbe kbk kbs kca kcb kcc kcd kce kck kcs kda kdb kdc kde kdk kds ke- kea keb kec ked kee kek kes kkb kkc kke kkk kks ksa ksb ksc ksd kse ksk kss saa sab sac sad sae sak sas sba sbb sbc sbd sbe sbk sbs sca scb scc scd sce sck scs sda sdb sdc sdd sde sdk sds se- sea seb sec sed see sek ses sk- ska skb skc skd ske skk sks ss- ssa ssb ssc ssd sse ssk sss

-ase a-ak a-be aaaa aaab aaac aaad aaae aaas aaba aabb aabc aabd aaca aacb aacc aacd aace aack aacs aada aadc aade aads aaea aaec aaes aaka aake aasa aasc aasd aase aass abaa abab abac abad abae abak abas abb- abba abbb abbe abbs abca abcb abcc abcd abcs abda abec abed abee abes abs- absa absd abse abss acaa acab acac acad acae acas acba acca accc accd acce accs acda acdb acdc acde acds ace- acea acec aced acek aces ackd acke acks acsa acsc acsd acse acss adaa adab adac adad adae adak adas adba adbc adcc adcs adda addc addd adde adds adea adeb adee ades adsa adss aeac aeas aebs aecb aede aeka aesc aesd aess akaa akae akas akca aked akee akes akka aksa asaa asab asac asad asae asak asas asba asc- asca ascb ascc asce asda asde asds asea asec asee asek ases aska aske asks assa assc assd asse assk asss baaa baad baak baas baba babb babe babs bac- baca bacc bace back bacs bada badb badd bade bads baed baek baes bak- baka bake baks basa basc base bask bass bbad bbas bbbb bbbs bbdd bbeb bcaa bcas bcbc bcbs bcca bccc bccs bcda bcde bcds bcec bces bcsa bcsc bcss bdbc bddc bdes bdsd bead beak beas beba bebb bebe beca beck becs beda bede beds beeb beed beek bees beka beke beks bes- besa bese besk bess bsaa bsac bsas bsbd bscs bsea bseb bsec bsed bsee bses bssc bssd bsse c-cd caaa caab caac caas caba cabe cabs cac- caca cacc cace cack cada cadc cadd cade cads caec caes caka cake casa casb casc casd case cask cass cbac cbbc cbbs cbca cbcc cbce cbcs cbdb cbdc cbds cbea cbec cbee cbka cbsa cbsc cbse ccaa ccab ccac ccad ccas ccba ccbc ccca cccb cccc cccs ccdc ccds cced ccee ccsa ccsd ccss cd-e cdaa cdac cdad cdba cdcs cdda cddb cdec cdes cdss ceac cead ceas ceba cebs cec- ceca cece cecs ceda cedd cede ceeb ceec cees ceke cesa cesc cese cess ckac ckbc ckbe ckck ckcs cksa cksb csaa csab csac csak csas cscb cscc cscd csce cscs csda csdb csea csec csee cska csks cssa cssd csse daab daad daae daas daba dabb dabs daca dace dacs dada dade dads daeb daka dake daks dasa dasb dasc dasd dase dask dass dbas dbcc dbcs dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dcsc dcss dddd ddes ddss deac dead deae deak deas deba debe debs dec- deca decc decd dece deck decs deda dedd dede deeb deed deek dees dek- deka deke deks des- desa desc dese desk dess dkba dkdc dsac dsba dsbc dscc dscs dsda dsea dssa dssc eaba eaca eacc eada eadb eadd eads eaec easa ease ebac ebba ebbc ebbs ebcc ebed ebes ebsa ecaa ecac ecad ecbc ecbe ecca eccb eccc ecce ecdc eced eces ecka ecks ecsa ecsc ecse ecss edac edad edas edca edda eddc edde edds ede- edea edes edsa edss eeca eecs eede eeea eeee eees eeka eeke eeks eese eesk eka- ekab ekeb eked ekek ekes ekka esab esac esad esas esba esbs esca escb esce escs esda esds esea esee esek eses eska eske esks essa esse kaaa kaab kaak kaas kaba kabb kabc kabd kabe kacb kacc kacd kace kacs kad- kada kadd kade kads kaes kaka kakc kake kakk kaks kas- kasa kasb kasc kase kask kass kbaa kbab kbac kbad kbae kbak kbas kbba kbbb kbbc kbbd kbbe kbbk kbbs kbca kbcb kbce kbck kbcs kbdb kbde kbds kbeb kbec kbed kbee kbek kbes kbkb kbkk kbsa kbsb kbsk kbss kcaa kcab kcac kcad kcas kcba kcbc kcbd kcbk kcbs kcca kccb kccc kccd kcck kcda kcdc kcdd kcds kcea kceb kcec kced kcee kckc kckk kcsa kcsb kcsc