-al a-a a-b a-c aaa aab aac aal aar aas aax ab- aba abb abc abl abr abs abx ac- aca acb acc acl acr acs acx al- ala alb alc all alr als alx ar- ara arb arc arl arr ars arx as- asa asb asc asl asr ass asx ax- axa axl axr axs axx baa bab bac bal bar bas bax bba bbb bbc bbl bbr bbs bbx bca bcb bcc bcl bcr bcs bcx bla blb blc bll blr bls blx bra brb brl brr brs brx bsa bsb bsc bsl bsr bss bsx bxb bxl bxx c-- caa cab cac cal car cas cax cba cbb cbc cbl cbr cbs cbx cca ccb ccc ccl ccr ccs ccx cl- cla clb clc cll clr cls clx cra crb crc crl crr crs crx csa csb csc csl csr css csx cxc cxl cxr cxs cxx la- laa lab lac lal lar las lax lba lbb lbc lbl lbr lbs lbx lca lcb lcc lcl lcr lcs lcx lla llb llc lll llr lls lra lrb lrc lrr lrs lsa lsb lsc lsl lsr lss lxc lxr lxx ra- raa rab rac ral rar ras rax rba rbb rbc rbl rbr rbs rbx rca rcb rcc rcl rcr rcs rcx rla rlc rll rlr rls rra rrb rrc rrl rrr rrs rsa rsb rsc rsl rsr rss rsx rxr rxs saa sab sac sal sar sas sax sba sbb sbc sbl sbr sbs sbx sca scb scc scl scr scs scx sla slb slc sll slr sls slx sr- sra srb src srl srr srs srx ss- ssa ssb ssc ssl ssr sss ssx sxc sxl sxs xaa xac xal xar xas xbc xbl xbr xbx xcb xcl xcr xcx xla xlb xlr xls xrc xrx xsa xsb xsc xsl xss xxl xxx

aaaa aaab aaac aaal aaar aaas aaba aabb aabc aabl aaca aacb aacc aacl aacr aacs aala aalc aall aals aara aarc aars aasa aasc aass abaa abab abac abal abar abas abax abb- abba abbb abbr abbs abca abcb abcc abcl abcr abcs abla abls abra abrc abrs abs- absa absl abss acaa acab acac acar acas acba acbl acca accc accs acla aclc aclr acls acr- acra acrc acrr acrs acsa acsc acsl acss alaa alac alal alar alas alb- alba albc albs alca alcc alcs all- alla alll allr alls alsa alsc alxa arab arac aral arar aras arax arba arbs arc- arca arcs arla arr- arra arrc arrr arrs ars- arsa arsc asaa asab asac asal asar asas asba asc- asca ascb ascc ascl ascr ascx asla aslr asra asrc asrs assa assc assl assr asss axal axar ba-x baaa baal baar baas baba babb babr babs bac- baca bacc bacs bala balc ball bals bar- bara barb barc barr bars barx basa basc bass bbas bbbb bbbs bblb bbls bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccl bccs bcra bcrs bcsa bcsc bcsl bcss blaa blab blac blas blls blrc blss brab brac bras brax brca brcb brls brrr brrs brsb brsr bsaa bsac bsas bscs bslc bsra bssc caaa caab caac caal caas caba cabs cac- caca cacc cacr cala calc call cals calx cara carb carc carl carr cars carx casa casb casc casl casr cass caxa cbac cbal cbar cbax cbbc cbbs cbca cbcc cbcl cbcr cbcs cblb cblc cbrl cbsa cbsc cbxa ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccl cccs ccla cclc ccls cclx ccra ccrc ccrl ccrs ccsa ccsl ccss ccxl clab clar clas clra clrs clsa clsc clxx crab crac crar cras crax crbc crca crcc crcr crls crsa crss csaa csab csac csar csas cscb cscc cscl cscr cscs csla cslr csra csrc csrs cssa cssr cxxx laaa laac laal laar laas laax laba labr labs laca lacc lacl lacs lala lall lara larb larc larr lars lasa lass laxa lbar lbcc lblr lbrs lbsc lcac lcbc lcca lccc lccs lcls lcra lcrl lcrs lcsc lcsr llbs llcc llcs lllc llll lrac lral lrba lrcs lrrc lrrr ls-r lscb lscs lsla lsrc lssa lssr lxra lxxx raab raas raba rabb rabl rabs rac- raca racc racs rala ralb rall rara rarb rars rasa rasc rasl rass raxa rbbb rbbr rbbs rbcl rbsl rbss rcac rcas rcbc rccb rccc rccs rcls rcsa rcsc rcsl rcss rlab rlcs rlls rras rrrr rsaa rscc rscs rslc rssa rssl sa-c sa-x saab saac saal saar saas saba sabb sabc sabr sabs saca sacc sacr sacs sala salc sall sals sara sarc sarl sarr sars sasa sasc sasl sass saxa saxl sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scal scar scas scba sccc sccl sccs scl- sclc scls scr- scra scrc scrs scsa scsc scsl scsr slaa slab slac slas slax slcc slrc slrs slsa slsc sras srbc srcc ssaa ssab ssac ssas ssbr ssca sscc sscs ssla sslc ssra ssrc ssrl ssrs sssa sssb sssc ssss sxbl xaar xacl xala xall xara xbar xbra xbrl xcal xcas xcbl xxxx

-aaa- a-l-x aaaas aaarc aaasa aaass aabaa aabba aabra aacbc aacsa aacsb aacsl aacss aasra abaab ababa ababs abaca abacs abala aball abara abasa abass abbac abbar abbas abbrs abcas abccc abrac abrar abras absar acaca acacb acala acall acar- acara acars acass accas accra aclla acrab acral alaba alaca alala alara alars alasa alass albac albal albar albas alcra allal allar allas allra allss alsab ar-ab ara-c arab- araba arabs araca arara arars arass araxa arbab arbar arbas arcas arras arsac arsal asaba asabc asala asall asara asasa asbca ascar aslab asrar assab assac assal assas asxas b-cas baalc baals baars babar babas babax babbs babra bacab bacar bacas bacax bacca balac balal balar balas balca balla balls balsa bar-x baraa barab barac baral barar baras barba barbs barca barcs barla barra barrs barsa barss basab basal basar basca basra bassa bball bbsrc bccsl blaas blabs blaca blacc blars blass braal braas braca bracc bracs