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 madc madd mads maka maks mama mamc mams masa masc mask mass mbac mbam mbas mbba mbbs mbca mbcs mbda mbdb mbms mcaa mcac mcad mcas mcba mcbc mcca mccc mccd mcdc mcdd mckk mcmc mcsa mcsd mcss mdac mdas mdca mdcc mddm mdds mdma mdmc mdmk mdsd mkad mkak mkks mksm mmaa mmab mmac mmas mmcc mmcd mmcm mmcs mmda mmdb mmdc mmds mmmc mmmd mmmm mmms mmsc mmsd msaa msad msas msba msca mscc msdc msma msmb msmc msmm msms mssa mssm sa-c saab saac saad saak saam saas saba sabb sabc sabs saca sacc sacd sack sacs sada sadb sadc sadd sadm sads saka sakb sakk saks sam- sama samc samm sams sasa sasc sasd sask sasm sass sbaa sbac sbas sbbs sbca sbcc sbcs sbds sbma sbmc sbsa sbsd scaa scab scac scad scak scam scas scba sccc sccm sccs scda scdc scds sck- scma scmc scmm scms scsa scsc scsd sdak sdba sdcc sddc sdds sdma sdms sdsc sdsm sdss skab skac skad sksd skss smaa smac smad smak smas smba smbc smcc smdc smkb smkd smsc smsd smss ssaa ssab ssac ssam ssas ssca sscc sscs ssdc ssdd ssdm ssmc sssa sssb sssc sssm ssss