a-a a-b a-c a-t aaa aab aac aaj aao aar aas aat ab- aba abb abc abj abo abr abs abt ac- aca acb acc acj aco acr acs act aja ajb ajc ajj ajo ajr ajs ajt aoa aob aoc aoj aoo aor aos aot ar- ara arb arc arj aro arr ars art as- asa asb asc asj aso asr ass ast at- ata atb atc ato atr ats att baa bab bac baj bao bar bas bat bba bbb bbc bbo bbr bbs bbt bca bcb bcc bcj bco bcr bcs bct bja bjc bjj bjr bjs bjt boa bob boc boj boo bor bos bot bra brb brj bro brr brs brt bsa bsb bsc bsj bso bsr bss bst bta btb btc bto btr bts btt c-- c-j caa cab cac caj cao car cas cat cba cbb cbc cbj cbo cbr cbs cbt cca ccb ccc ccj cco ccr ccs cct cja cjb cjc cjr cjs co- coa cob coc coj coo cor cos cot cra crb crc crj cro crr crs crt csa csb csc csj cso csr css cst cta ctb ctc cto ctr cts ctt jaa jab jac jaj jao jar jas jat jba jbc jbj jbo jbr jbs jbt jca jcb jcc jco jcr jcs jct jja jjb jjc jjj jjr jjs joa job joc joj joo jor jos jot jra jrb jrc jro jrr jrs jrt jsa jsb jsc jsj jso jsr jss jst jta jtb jtc jtr jts jtt oaa oab oac oaj oao oar oas oat ob- oba obb obc obj obo obr obs obt oc- oca ocb occ ocj oco ocr ocs oct oja ojb ojc ojo ojs oo- ooa oob ooc ooo oor oos oot or- ora orb orc oro orr ors ort os- osa osb osc osj oso osr oss ost ot- ota otb otc oto otr ots ott ra- raa rab rac raj rao rar ras rat rba rbb rbc rbo rbr rbs rbt rca rcb rcc rcj rco rcr rcs rct rja rjc rjr roa rob roc roj roo ror ros rot rra rrb rrc rrr rrs rrt rsa rsb rsc rsj rso rsr rss rst rta rtb rtc rtj rto rtr rts rtt saa sab sac saj sao sar sas sat sba sbb sbc sbj sbo sbr sbs sbt sca scb scc scj sco scr scs sct sja sjb sjc sjj sjr sjs sjt soa sob soc soj soo sor sos sot sr- sra srb src srj sro srr srs srt ss- ssa ssb ssc ssj sso ssr sss sst sta stb stc stj sto str sts stt taa tab tac taj tao tar tas tat tba tbb tbc tbj tbo tbr tbs tbt tca tcb tcc tcj tco tcr tcs tct tjc tjo tjr tjs to- toa tob toc toj too tor tos tot tra trb trc tro trr trs trt tsa tsb tsc tsj tso tsr tss tst tta ttb ttc tto ttr tts ttt

aaaa aaab aaac aaar aaas aaba aabb aabc aabt aaca aacb aacc aaco aacr aacs aact aaoo aara aarc aaro aars aart aasa aasc aass aast aata aatc aatt abaa abab abac abaj abar abas abat abb- abba abbb abbo abbr abbs abbt abca abcb abcc abcr abcs abct abjs aboa abob aboo abor abos abot abra abrc abro abrs abs- absa abss abta abts ac-t acaa acab acac acar acas acat acba acca accc acco accs acct acoa acor acos acot acr- acra acrc acro acrr acrs acsa acsc acss acst acta actc acto acts actt ajab ajac ajao ajar ajas ajat ajba ajob ajoo ajot ajss aoba aoca aocs aora aorb aors aort aoss aotc arab arac arar aras arat arba arbs arc- arca arco arcs arct arja arjo aroa arob aroo aror aros arr- arra arrc arro arrr arrs arrt ars- arsa arsc arso arst arta artc arto artr arts asaa asab asac asao asar asas asat asba asbo asc- asca ascb ascc ascj asco ascr asct asja asob asoc asor asos asot asra asrc asro asrs assa assc asso assr asss asst asta astb astc asto astr asts at-t ataa atab atac atar atas atat atbs atca atcc atco atcr atcs atob atoc ator atos atot atra atrc atro atsb atsc atst atta atto attr atts baaa baar baas baat baba babb babo babr babs bac- baca bacc baco bacs bact baja bajs baos bar- bara barb barc baro barr bars bart basa basc baso bass bast bata batc bato bats batt bbas bbbb bbbs bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs bcor bcos bcra bcrs bcsa bcsc bcss bctc bcts bjcc bjoa boab boac boar boas boat boba bobb bobo bobs boca boco bocs bojo bojt boob booc boor boos boot bor- bora borj boro borr bors bort bosa bosc boso boss bost bota botb boto bots bott brab brac braj brao bras brat brca brcb broa brob broc broo bror bros brot brrr brrs brsb brsr brst brtc bsaa bsac bsas bsat bscs bsos bsra bssc bsts btaa btcc btcs btob btor btrc btrt btss bttb c-bo caaa caab caac caas caat caba cabo cabs cac- caca cacc caco cacr caja caor caos cara carb carc carj caro carr cars cart casa casb casc caso casr cass cast cat- cata catb catc cato cats catt cbac cbar cbat cbbc cbbs cbca cbcc cbcr cbcs cbct cbot cbrj cbrt cbsa cbsc cbta cbtc ccaa ccab ccac ccar ccas ccat ccba ccbc ccca cccb cccc cccs ccjo ccob ccoc ccra ccrc ccrs ccrt ccsa ccss ccst cctb cctc cctt cjar cjbc cjca cjcb cjcj cjcs cjob cjor cjrb cjrc cjrj cjrs cjsb cjss cjtr coas coat coba cobb cobo cobs coca coco coct cojo coob coos coot cor- cora corb corc coro corr cors cort cosa cosc coso coss cost cota cotb cotc coto cots cott crab crac craj crar cras crat crbc crca crcc crcr crob croc croo cror crot crrt crsa crss crst crtc crts