a-a a-b a-c aaa aab aac aag aah aao aar aas ab- aba abb abc abg abh abo abr abs ac- aca acb acc acg ach aco acr acs ag- aga agb agc agg agh ago agr ags aha ahb ahc ahg ahh aho ahr ahs aoa aob aoc aog aoh aoo aor aos ar- ara arb arc arg arh aro arr ars as- asa asb asc asg ash aso asr ass baa bab bac bag bah bao bar bas bba bbb bbc bbg bbh bbo bbr bbs bca bcb bcc bcg bch bco bcr bcs bga bgb bgc bgg bgh bgo bgr bgs bha bhb bhc bhg bhh bho bhr bhs boa bob boc bog boh boo bor bos bra brb brg brh bro brr brs bsa bsb bsc bsg bsh bso bsr bss c-- caa cab cac cag cah cao car cas cba cbb cbc cbg cbh cbo cbr cbs cca ccb ccc ccg cch cco ccr ccs cga cgb cgc cgg cgh cgo cgr cgs ch- cha chb chc chg chh cho chr chs co- coa cob coc cog coh coo cor cos cra crb crc crg crh cro crr crs csa csb csc csg csh cso csr css gaa gab gac gag gah gao gar gas gba gbc gbg gbh gbo gbr gbs gca gcb gcc gcg gch gco gcr gcs gga ggb ggc ggg ggh ggo ggr ggs gha ghb ghc ghg ghh gho ghr ghs goa gob goc gog goh goo gor gos gra grb grc grg grh gro grr grs gsa gsb gsc gsg gso gsr gss haa hab hac hag hah hao har has hba hbb hbc hbg hbh hbo hbr hbs hca hcb hcc hcg hch hco hcr hcs hga hgb hgc hgg hgh hgo hgr hgs hha hhb hhc hhg hhh hho hhr hhs hoa hob hoc hog hoh hoo hor hos hr- hra hrb hrc hrg hrh hro hrr hrs hsa hsb hsc hsg hsh hsr hss oaa oab oac oag oah oao oar oas ob- oba obb obc obg obh obo obr obs oc- oca ocb occ ocg och oco ocr ocs oga ogc ogg ogh ogo ogs oha ohc ohg ohh oho ohr ohs oo- ooa oob ooc oog ooh ooo oor oos or- ora orb orc org orh oro orr ors os- osa osb osc osg osh oso osr oss ra- raa rab rac rag rah rao rar ras rba rbb rbc rbg rbh rbo rbr rbs rca rcb rcc rcg rch rco rcr rcs rga rgb rgc rgg rgh rgo rgr rgs rh- rha rhb rhc rhg rhh rho rhr rhs roa rob roc rog roh roo ror ros rra rrb rrc rrg rrh rrr rrs rsa rsb rsc rsg rsh rso rsr rss saa sab sac sag sah sao sar sas sba sbb sbc sbg sbh sbo sbr sbs sca scb scc scg sch sco scr scs sga sgb sgc sgg sgh sgo sgr sgs sh- sha shb shc shg shh sho shr shs soa sob soc sog soh soo sor sos sr- sra srb src srg srh sro srr srs ss- ssa ssb ssc ssg ssh sso ssr sss

a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aaco aacr aacs aagh aaha aahs aaoo aara aarc aaro aars aasa aasc aass abaa abab abac abag abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abch abcr abcs abha abho abhr abhs aboa abob aboh aboo abor abos abra abrc abro abrs abs- absa abss acaa acab acac acag acar acas acba acca accc acch acco accs acga acgr acgs acha achh acho achr achs acoa acog acoh acor acos acr- acra acrc acro acrr acrs acsa acsc acss ag-o agac agag agao agar agas agba agbo agca agcc agco agga agha aghs agob agog agoo agos agra agro agsa agsg ahab ahac ahah ahar ahas ahha ahhs ahoa ahog ahor ahra ahrc ahrr ahrs ahsa ahso ahss aoah aoba aoca aocs aora aorb aors aoss arab arac arag arah arar aras arba arbh arbs arc- arca arch arco arcs arga argb argh argo args arh- arhs aroa arob aroo aror aros arr- arra arrc arrg arrh arro arrr arrs ars- arsa arsc arso asaa asab asac asag asah asao asar asas asba asbo asc- asca ascb ascc asch asco ascr asha ashs asob asoc asog asor asos asra asrc asrg asro asrs assa assc assh asso assr asss baaa baah baar baas baba babb babo babr babs bac- baca bacc bach baco bacs baga bagg bagh bago bags baha baho bahr bahs baoh baos bar- bara barb barc barg barh baro barr bars basa basc bash baso bass bbas bbbb bbbs bbch bbga bbhs bbrc bbrg bcaa bcar bcas bcbc bcbg bcbs bcca bccc bccs bcgs bchs bcor bcos bcra bcrs bcsa bcsc bcss bgca bggs bghs bhag bhao bhar bhca bhcc bhhs bhog bhor bhra boab boac boag boar boas boba bobb bobo bobs boca boch boco bocs boga bogg bogh bogo bogs boha boho bohr bohs boob booc boog booh boor boos bor- bora borg borh boro borr bors bosa bosc bosh boso boss brab brac brag brah brao bras brca brcb brhs broa brob broc brog broh broo bror bros brrr brrs brsb brsr bsaa bsac bsas bscs bsgs bshs bsos bsra bssc c-bo caaa caab caac caah caas caba cabg cabo cabs cac- caca cacc cach caco cacr caga cagg cago cagr cags caha cahs caor caos cara carb carc caro carr cars casa casb casc cash caso casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbga cbgb cbha cbhs cbrh cbsa cbsc ccaa ccab ccac ccag ccar ccas ccba ccbc ccca cccb cccc cccs ccga ccgc ccgs ccha cchr cchs ccob ccoc ccra ccrc ccrg ccrs ccsa ccsg ccss cgac cgas cgcc cgcg cggs cghs cgro cgsb cgsh cgss chaa chab chac chag chah chao char chas chca chch chcs chgb chgs chha chhs choc choh choo