-al a-a a-b a-c aaa aab aac aad aal aan aar aas ab- aba abb abc abd abl abn abr abs ac- aca acb acc acd acl acn acr acs ad- ada adb adc add adl adn adr ads al- ala alb alc ald all aln alr als an- ana anb anc and anl ann anr ans ar- ara arb arc ard arl arn arr ars as- asa asb asc asd asl asn asr ass baa bab bac bad bal ban bar bas bba bbb bbc bbd bbl bbn bbr bbs bca bcb bcc bcd bcl bcn bcr bcs bda bdb bdc bdd bdl bdr bds bla blb blc bld bll bln blr bls bna bnb bnc bnd bnl bnn bnr bns bra brb brd brl brn brr brs bsa bsb bsc bsd bsl bsn bsr bss c-- caa cab cac cad cal can car cas cba cbb cbc cbd cbl cbn cbr cbs cca ccb ccc ccd ccl ccn ccr ccs cda cdb cdc cdd cdl cdn cdr cds cl- cla clb clc cld cll cln clr cls cn- cna cnb cnc cnd cnl cnn cnr cns cra crb crc crd crl crn crr crs csa csb csc csd csl csn csr css daa dab dac dad dal dan dar das dba dbb dbc dbd dbl dbn dbr dbs dca dcb dcc dcd dcl dcn dcr dcs dda ddb ddc ddd ddl ddn ddr dds dl- dla dlb dlc dld dll dlr dls dna dnb dnc dnd dnl dnn dnr dns dra drb drc drd drl drn drr drs dsa dsb dsc dsd dsl dsn dsr dss la- laa lab lac lad lal lan lar las lba lbb lbc lbd lbl lbr lbs lca lcb lcc lcd lcl lcn lcr lcs lda ldb ldc ldd ldl ldn ldr lds lla llb llc lld lll lln llr lls lna lnb lnc lnd lnl lnn lnr lns lra lrb lrc lrd lrn lrr lrs lsa lsb lsc lsd lsl lsn lsr lss naa nab nac nad nal nan nar nas nba nbb nbc nbd nbl nbn nbr nbs nca ncb ncc ncd ncl ncn ncr ncs nda ndb ndc ndd ndl ndn ndr nds nla nlb nlc nld nll nln nlr nls nna nnb nnc nnl nnn nns nra nrb nrc nrd nrl nrn nrr nrs nsa nsb nsc nsd nsl nsn nsr nss ra- raa rab rac rad ral ran rar ras rba rbb rbc rbd rbl rbn rbr rbs rca rcb rcc rcd rcl rcn rcr rcs rda rdb rdc rdd rdl rdn rdr rds rla rlc rld rll rln rlr rls rna rnb rnc rnd rnn rnr rns rra rrb rrc rrd rrl rrn rrr rrs rsa rsb rsc rsd rsl rsn rsr rss saa sab sac sad sal san sar sas sba sbb sbc sbd sbl sbn sbr sbs sca scb scc scd scl scn scr scs sda sdb sdc sdd sdl sdn sdr sds sla slb slc sld sll sln slr sls sna snb snc snd snl snn snr sns sr- sra srb src srd srl srn srr srs ss- ssa ssb ssc ssd ssl ssn ssr sss

-ana aaaa aaab aaac aaad aaal aaan aaar aaas aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aacn aacr aacs aada aadc aads aala aalc aald aall aals aana aand aara aarc aard aars aasa aasc aasd aass abaa abab abac abad abal aban abar abas abb- abba abbb abbr abbs abca abcb abcc abcd abcl abcn abcr abcs abda abla abls abra abrc abrs abs- absa absd absl abss acaa acab acac acad acan acar acas acba acbl acca accc accd accs acda acdb acdc acds acla aclc aclr acls acr- acra acrc acrr acrs acsa acsc acsd acsl acss adaa adab adac adad adal adan adar adas adba adbc adcc adcs adda addc addd addl addn addr adds adls adna adns adra adrs adsa adsl adsr adss alaa alac alad alal alan alar alas alb- alba albc albs alca alcc alcs ald- alda aldl alds all- alla alll alln allr alls alna alsa alsc alsn ana- anaa anab anac anad anal anan anar anas anba anbb anbl anca ancc and- anda andl andr ands anla anlc anln anna annb anns anrc ansa ansd arab arac arad aral aran arar aras arba arbs arc- arca arcs arda ardc ardl ards arla arna arnd arns arr- arra arrc arrr arrs ars- arsa arsc arsd asaa asab asac asad asal asan asar asas asba asc- asca ascb ascc ascl ascr asda asdl asds asla aslr asnc asnl asra asrc asrs assa assc assd assl assn assr asss baaa baad baal baan baar baas baba babb babr babs bac- baca bacc bacn bacs bada badb badd badr bads bala balc bald ball bals bana banc band bann banr bans bar- bara barb barc bard barn barr bars basa basc bass bbad bbas bbbb bbbs bbdd bblb bbls bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccl bccs bcda bcds bcra bcrs bcsa bcsc bcsl bcsn bcss bd-r bdbc bddc bdls bdna bdsd blaa blab blac blad blan blas bldc bldr blls blrc blss bnas bnrr bnss brab brac brad bran bras brca brcb brda brds brls brna brns brrr brrs brsb brsr bsaa bsac bsas bsbd bscs bsdl bslc bsnd bsns bsra bsrd bssc bssd c-cd caaa caab caac caal caan caas caba cabs cac- caca cacc cacr cada cadc cadd cadr cads cala calc cald call cals cana canc cand cann cans cara carb carc card carl carn carr cars casa casb casc casd casl casr cass cbac cbal cbar cbbc cbbs cbca cbcc cbcl cbcn cbcr cbcs cbdb cbdc cbdn cbds cblb cblc cbln cbna cbnd cbrd cbrl cbrn cbsa cbsc cbsn ccaa ccab ccac ccad ccar ccas ccba ccbc ccbn ccca cccb cccc cccl cccs ccdc ccdn ccdr ccds ccla cclc ccls ccna ccnb ccnc ccnr ccns ccra ccrc ccrl ccrs ccsa ccsd ccsl ccsn ccss cd-r cdaa cdac cdad cdba cdcs cdda cddb cddl