-th a-a a-b a-c a-t aaa aab aac aah aao aar aas aat aax ab- aba abb abc abh abo abr abs abt abx ac- aca acb acc ach aco acr acs act acx aha ahb ahc ahh aho ahr ahs aht ahx aoa aob aoc aoh aoo aor aos aot aox ar- ara arb arc arh aro arr ars art arx as- asa asb asc ash aso asr ass ast asx at- ata atb atc ath ato atr ats att atx ax- axa axh axo axr axs axt axx baa bab bac bah bao bar bas bat bax bba bbb bbc bbh bbo bbr bbs bbt bbx bca bcb bcc bch bco bcr bcs bct bcx bha bhb bhc bhh bho bhr bhs bht bhx boa bob boc boh boo bor bos bot box bra brb brh bro brr brs brt brx bsa bsb bsc bsh bso bsr bss bst bsx bta btb btc bth bto btr bts btt btx bxb bxo bxx c-- caa cab cac cah cao car cas cat cax cba cbb cbc cbh cbo cbr cbs cbt cbx cca ccb ccc cch cco ccr ccs cct ccx ch- cha chb chc chh cho chr chs cht chx co- coa cob coc coh coo cor cos cot cox cra crb crc crh cro crr crs crt crx csa csb csc csh cso csr css cst csx cta ctb ctc cth cto ctr cts ctt ctx cxc cxh cxo cxr cxs cxt cxx haa hab hac hah hao har has hat hax hba hbb hbc hbh hbo hbr hbs hbt hbx hca hcb hcc hch hco hcr hcs hct hha hhb hhc hhh hho hhr hhs hht hoa hob hoc hoh hoo hor hos hot hox hr- hra hrb hrc hrh hro hrr hrs hrt hsa hsb hsc hsh hsr hss hst hsx hta htb htc hth hto htr hts htt htx hxc oaa oab oac oah oao oar oas oat oax ob- oba obb obc obh obo obr obs obt obx oc- oca ocb occ och oco ocr ocs oct ocx oha ohc ohh oho ohr ohs oht oo- ooa oob ooc ooh ooo oor oos oot oox or- ora orb orc orh oro orr ors ort orx os- osa osb osc osh oso osr oss ost osx ot- ota otb otc oth oto otr ots ott ox- oxa oxb oxc oxo oxt oxx ra- raa rab rac rah rao rar ras rat rax rba rbb rbc rbh rbo rbr rbs rbt rbx rca rcb rcc rch rco rcr rcs rct rcx rh- rha rhb rhc rhh rho rhr rhs rht roa rob roc roh roo ror ros rot rox rra rrb rrc rrh rrr rrs rrt rsa rsb rsc rsh rso rsr rss rst rsx rta rtb rtc rto rtr rts rtt rtx rxr rxs saa sab sac sah sao sar sas sat sax sba sbb sbc sbh sbo sbr sbs sbt sbx sca scb scc sch sco scr scs sct scx sh- sha shb shc shh sho shr shs sht soa sob soc soh soo sor sos sot sox sr- sra srb src srh sro srr srs srt srx ss- ssa ssb ssc ssh sso ssr sss sst ssx sta stb stc sth sto str sts stt stx sxc sxs sxt t-x taa tab tac tah tao tar tas tat tax tba tbb tbc tbh tbo tbr tbs tbt tca tcb tcc tch tco tcr tcs tct tcx th- tha thb thc thh tho thr ths tht thx to- toa tob toc toh too tor tos tot tox tra trb trc trh tro trr trs trt trx tsa tsb tsc tsh tso tsr tss tst tsx tta ttb ttc tth tto ttr tts ttt ttx txs txt xaa xac xar xas xat xbc xbr xbx xcb xch xcr xcx xht xoa xoc xoo xor xos xot xox xrc xrt xrx xsa xsb xsc xss xst xtc xtr xts xtx xxo xxx

a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aaco aacr aacs aact aaha aahs aaoo aara aarc aaro aars aart aasa aasc aass aast aata aatc aatt abaa abab abac abar abas abat abax abb- abba abbb abbo abbr abbs abbt abca abcb abcc abch abcr abcs abct abha abho abhr abhs aboa abob aboh aboo abor abos abot abox abra abrc abro abrs abs- absa abss abta abts ac-t acaa acab acac acar acas acat acba acca accc acch acco accs acct acha achh acho achr achs acht acoa acoh acor acos acot acr- acra acrc acro acrr acrs acsa acsc acss acst acta actc acth acto acts actt ahab ahac ahah ahar ahas ahat ahha ahhs ahoa ahor ahot ahra ahrc ahrr ahrs ahsa ahso ahss ahta ahto ahts aoah aoba aoca aocs aora aorb aors aort aoss aotc arab arac arah arar aras arat arax arba arbh arbs arc- arca arch arco arcs arct arh- arhs aroa arob aroo aror aros arr- arra arrc arrh arro arrr arrs arrt ars- arsa arsc arso arst arta artc arth arto artr arts artx asaa asab asac asah asao asar asas asat asba asbo asc- asca ascb ascc asch asco ascr asct ascx asha ashs asht ashx asob asoc asor asos asot asra asrc asro asrs assa assc assh asso assr asss asst asta astb astc asto astr asts at-t at-x ataa atab atac atar atas atat atax atbs atca atcc atch atco atcr atcs atha atho aths atob atoc ator atos atot atra atrc atro atrx atsb atsc atst atta atto attr atts axar axat axo- axoa axos axto axxo ba-x baaa baah baar baas baat baba babb babo babr babs bac- baca bacc bach baco bacs bact baha baho bahr bahs baht baoh baos bar- bara barb barc barh baro barr bars bart barx basa basc bash baso bass bast bata batc bath bato bats batt baxt bbas bbbb bbbs bbch bbhs bbox bbrc bcaa bcar bcas bcat bcbc bcbs bcca bccc bccs