a-a a-b a-c aaa aab aac aad aak aam aas ab- aba abb abc abd abk abm abs ac- aca acb acc acd ack acm acs ad- ada adb adc add adk adm ads aka akb akc akd akk akm aks ama amb amc amd amk amm ams as- asa asb asc asd ask asm ass baa bab bac bad bak bam bas bba bbb bbc bbd bbk bbm bbs bca bcb bcc bcd bck bcm bcs bda bdb bdc bdd bdk bdm bds bka bkb bkc bkk bkm bks bma bmb bmc bmd bmk bmm bms bsa bsb bsc bsd bsk bsm bss c-- caa cab cac cad cak cam cas cba cbb cbc cbd cbk cbm cbs cca ccb ccc ccd cck ccm ccs cda cdb cdc cdd cdk cdm cds cka ckb ckc ckd ckm cks cma cmb cmc cmd cmk cmm cms csa csb csc csd csk csm css daa dab dac dad dak dam das dba dbb dbc dbd dbk dbm dbs dca dcb dcc dcd dck dcm dcs dda ddb ddc ddd ddk ddm dds dka dkb dkc dkk dkm dks dma dmb dmc dmd dmk dmm dms dsa dsb dsc dsd dsk dsm dss ka- kaa kab kac kad kak kam kas kba kbb kbc kbd kbk kbm kbs kca kcb kcc kcd kck kcm kcs kda kdb kdc kdk kdm kds kkb kkc kkk kkm kks kma kmb kmc kmd kmk kmm kms ksa ksb ksc ksd ksk ksm kss maa mab mac mad mak mam mas mba mbb mbc mbd mbk mbm mbs mc- mca mcb mcc mcd mck mcm mcs mda mdb mdc mdd mdk mdm mds mka mkb mkc mkd mkk mkm mks mma mmb mmc mmd mmk mmm mms msa msb msc msd msk msm mss saa sab sac sad sak sam sas sba sbb sbc sbd sbk sbm sbs sca scb scc scd sck scm scs sda sdb sdc sdd sdk sdm sds sk- ska skb skc skd skk skm sks sma smb smc smd smk smm sms ss- ssa ssb ssc ssd ssk ssm sss

a-ak aaaa aaab aaac aaad aaam aaas aaba aabb aabc aabd aabm aaca aacb aacc aacd aack aacm aacs aada aadc aads aaka aama aamb aamc aamd aams aasa aasc aasd aasm aass abaa abab abac abad abak abam abas abb- abba abbb abbs abca abcb abcc abcd abcs abda abma abmb abmc abms abs- absa absd abss acaa acab acac acad acas acba acca accc accd accm accs acda acdb acdc acdm acds ackd acks acma acmc acms acsa acsc acsd acsm acss adaa adab adac adad adak adam adas adba adbc adcc adcs adda addc addd adds adma admb adms adsa adsm adss akaa akam akas akca akka aksa amaa amac amad amam amas amb- amba ambs amca amcc amcs amda amds amka amm- amma amsa amsc amsd amss asaa asab asac asad asak asam asas asba asbm asc- asca ascb ascc asda asds aska asks asma asmd asmm asms assa assc assd assk asss baaa baad baak baam baas baba babb babm babs bac- baca bacc back bacs bada badb badd bads bak- baka baks bama bamb bamc bamm bams basa basc bask bass bbad bbas bbbb bbbs bbcm bbdd bcaa bcam bcas bcbc bcbs bcca bccc bccm bccs bcda bcds bcma bcms bcsa bcsc bcsm bcss bdbc bddc bdsd bdsm bmaa bmdb bsaa bsac bsam bsas bsbd bscs bsms bssc bssd bssm c-cd caaa caab caac caam caas caba cabs cac- caca cacc cack cacm cada cadc cadd cadm cads caka cama camb camc camk camm cams casa casb casc casd cask casm cass cbac cbbc cbbs cbca cbcc cbcm cbcs cbdb cbdc cbds cbka cbkm cbms cbsa cbsc cbsm ccaa ccab ccac ccad ccam ccas ccba ccbc ccca cccb cccc cccm cccs ccdc ccdm ccds cckm ccma ccmb ccmc ccmd ccmm ccms ccsa ccsd ccss cdaa cdac cdad cdba cdcs cdda cddb cdma cdms cdss ckac ckbc ckck ckcm ckcs ckdm cksa cksb cmaa cmac cmas cmba cmbc cmbs cmcc cmcs cmda cmdb cmmb cmmc cmms cmsa cmsc csaa csab csac csak csas csbm cscb cscc cscd cscs csda csdb cska csks csma csmc cssa cssd cssm daab daad daam daas daba dabb dabs daca dacs dada dads daka daks dama damb damm dams dasa dasb dasc dasd dask dass dbas dbcc dbcs dbms dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dcma dcms dcsc dcss dddd ddss dkba dkdc dkms dmaa dmab dmac dmas dmba dmcc dmcm dmcs dmdc dmds dmsa dmss dsac dsba dsbc dscc dscs dsda dsdm dsmb dsmc dsms dssa dssc kaaa kaab kaak kaam kaas kaba kabb kabc kabd kacb kacc kacd kacs kad- kada kadd kadm kads kaka kakc kakk kakm kaks kam- kama kamb kamc kamm kams kas- kasa kasb kasc kask kasm kass kbaa kbab kbac kbad kbak kbam kbas kbba kbbb kbbc kbbd kbbk kbbm kbbs kbca kbcb kbck kbcs kbdb kbds kbkb kbkk kbmb kbmc kbms kbsa kbsb kbsk kbsm kbss kcaa kcab kcac kcad kcam kcas kcba kcbc kcbd kcbk kcbs kcca kccb kccc kccd kcck kcda kcdc kcdd kcds kckc kckk kckm kcmb kcmc kcmd kcmk kcmm kcms kcsa kcsb kcsc kcsd kcsm kcss kdaa kdab kdac kdad kdak kdam kdbb kdbm kdbs kdca kdcc kdcd kddb kddc kddd kddk kdka kdkb kdkd kdkk kdma kdmc kdmd kdms kdsc kdsd kdsk kdsm kdss kkaa kkac kkam kkba kkbb kkbd kkbs kkcb kkcd kkck kkcm kkcs kkda kkdc kkdd kkdm kkkk kkma kkmc kkmk kkms kksa kksd kksm kkss kmac kmad kmak kmam kmas kmbc kmbd kmbs kmca kmcb kmcc kmcd kmcm kmcs kmdb kmds kmkk kmks kmmk kmmm kmms kmsa kmsb kmsc kmsd kmss ksab ksac ksak ksam ksas ksba ksbc ksbs ksca kscb ksck kscm kscs ksdc ksdk ksdm ksds kska kskb kskd kskk ksks ksma ksmb ksmc ksmd ksmm ksms kssa kssm ksss maaa maac maad maak maam maas maba mabs mac- maca macb macc macd mack macs mada madb