-th a-a a-b a-c a-t aaa aab aac aah aao aas aat ab- aba abb abc abh abo abs abt ac- aca acb acc ach aco acs act aha ahb ahc ahh aho ahs aht aoa aob aoc aoh aoo aos aot as- asa asb asc ash aso ass ast at- ata atb atc ath ato ats att baa bab bac bah bao bas bat bba bbb bbc bbh bbo bbs bbt bca bcb bcc bch bco bcs bct bha bhb bhc bhh bho bhs bht boa bob boc boh boo bos bot bsa bsb bsc bsh bso bss bst bta btb btc bth bto bts btt c-- caa cab cac cah cao cas cat cba cbb cbc cbh cbo cbs cbt cca ccb ccc cch cco ccs cct ch- cha chb chc chh cho chs cht co- coa cob coc coh coo cos cot csa csb csc csh cso css cst cta ctb ctc cth cto cts ctt haa hab hac hah hao has hat hba hbb hbc hbh hbo hbs hbt hca hcb hcc hch hco hcs hct hha hhb hhc hhh hho hhs hht hoa hob hoc hoh hoo hos hot hsa hsb hsc hsh hss hst hta htb htc hth hto hts htt oaa oab oac oah oao oas oat ob- oba obb obc obh obo obs obt oc- oca ocb occ och oco ocs oct oha ohc ohh oho ohs oht oo- ooa oob ooc ooh ooo oos oot os- osa osb osc osh oso oss ost ot- ota otb otc oth oto ots ott saa sab sac sah sao sas sat sba sbb sbc sbh sbo sbs sbt sca scb scc sch sco scs sct sh- sha shb shc shh sho shs sht soa sob soc soh soo sos sot ss- ssa ssb ssc ssh sso sss sst sta stb stc sth sto sts stt taa tab tac tah tao tas tat tba tbb tbc tbh tbo tbs tbt tca tcb tcc tch tco tcs tct th- tha thb thc thh tho ths tht to- toa tob toc toh too tos tot tsa tsb tsc tsh tso tss tst tta ttb ttc tth tto tts ttt

a-ha aaaa aaab aaac aaah aaas aaba aabb aabc aabh aabt aaca aacb aacc aach aaco aacs aact aaha aahs aaoo aasa aasc aass aast aata aatc aatt abaa abab abac abas abat abb- abba abbb abbo abbs abbt abca abcb abcc abch abcs abct abha abho abhs aboa abob aboh aboo abos abot abs- absa abss abta abts ac-t acaa acab acac acas acat acba acca accc acch acco accs acct acha achh acho achs acht acoa acoh acos acot acsa acsc acss acst acta actc acth acto acts actt ahab ahac ahah ahas ahat ahha ahhs ahoa ahot ahsa ahso ahss ahta ahto ahts aoah aoba aoca aocs aoss aotc asaa asab asac asah asao asas asat asba asbo asc- asca ascb ascc asch asco asct asha ashs asht asob asoc asos asot assa assc assh asso asss asst asta astb astc asto asts at-t ataa atab atac atas atat atbs atca atcc atch atco atcs atha atho aths atob atoc atos atot atsb atsc atst atta atto atts baaa baah baas baat baba babb babo babs bac- baca bacc bach baco bacs bact baha baho bahs baht baoh baos basa basc bash baso bass bast bata batc bath bato bats batt bbas bbbb bbbs bbch bbhs bcaa bcas bcat bcbc bcbs bcca bccc bccs bchs bcos bcsa bcsc bcss bctc bcts bhao bhat bhca bhcc bhhs bhot boab boac boas boat boba bobb bobo bobs boca boch boco bocs boha boho bohs boht boob booc booh boos boot bosa bosc bosh boso boss bost bota botb both boto bots bott bsaa bsac bsas bsat bscs bshs bsos bssc bsts btaa btcc btcs bths btob btss bttb c-bo caaa caab caac caah caas caat caba cabo cabs cac- caca cacc cach caco caha cahs caht caos casa casb casc cash caso cass cast cat- cata catb catc cath cato cats catt cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbha cbhs cbot cbsa cbsc cbta cbtc ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccs ccha cchs ccob ccoc ccsa ccss ccst cctb cctc cctt chaa chab chac chah chao chas chat chca chch chcs chha chhs choc choh choo chos chsc chsh chst chto chtt coas coat coba cobb cobh cobo cobs coca coch coco coct coha coho cohs coob cooh coos coot cosa cosc cosh coso coss cost cota cotb cotc coth coto cots cott csaa csab csac csao csas csat cscb cscc csch csco cscs cshs csob csos csot cssa csta cstc csto csts ctab ctba ctbs ctca cths ctos ctot ctsa ctsc ctss ctta ctts haab haas haat haba habo habs habt haco hacs haha haho hahs haht hasa hasc hash hass hast hata hatb hath hato hats hatt hbbs hbhs hboc hbos hbss hcat hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcso hcss hcst hhaa hhat hhhh hhhs hoac hoas hoat hoba hobo hobs hoca hoch hocs hoha hoho hoos hoot hosa hosh hoss host hota hotb hoth hoto hots hott hsac hsas hsat hsbc hscc hsct hshs hsob hsts htab htcc hths htoh htsc oahs oasc oass oast oath oats obas obba obbo obhs obos obot obss obst obts ocab ocac ocas ocat ocbc occa occc occt ocha ochs ocht ocos ocsa oct- octa octo octs ohba ohcc ohho ohhs ohob ohoh ohos ohso ohss ohta ohto ooaa ooba ooha ooho oohs oooh oooo ooos oosa oost ootb oots osas osat osba osca oscc osco osha oshc osho oshs osoo osos ossa ossb osso osta ostc osts otac otas otbs otha otho oths oto- otoh otoo otos otsa otso otta otto otts s-os sa-c saab saac saah saas saat saba sabb sabc sabo sabs saca sacc saco sacs sact saha saho sahs saht saos sasa sasc sash saso sass sast sata satb satc sato sats