-th a-a a-b a-c a-t aaa aab aac aaf aah aao aar aat ab- aba abb abc abf abh abo abr abt ac- aca acb acc acf ach aco acr act af- afa afb afc aff afh afo afr aft aha ahb ahc ahf ahh aho ahr aht aoa aob aoc aof aoh aoo aor aot ar- ara arb arc arf arh aro arr art at- ata atb atc atf ath ato atr att baa bab bac baf bah bao bar bat bba bbb bbc bbf bbh bbo bbr bbt bca bcb bcc bcf bch bco bcr bct bfa bfb bfc bff bfh bfo bfr bft bha bhb bhc bhf bhh bho bhr bht boa bob boc bof boh boo bor bot bra brb brf brh bro brr brt bta btb btc btf bth bto btr btt c-- caa cab cac caf cah cao car cat cba cbb cbc cbf cbh cbo cbr cbt cca ccb ccc ccf cch cco ccr cct cfa cfb cfc cff cfh cfo cfr cft ch- cha chb chc chf chh cho chr cht co- coa cob coc cof coh coo cor cot cra crb crc crf crh cro crr crt cta ctb ctc ctf cth cto ctr ctt faa fab fac faf fah fao far fat fba fbb fbc fbf fbh fbo fbr fbt fca fcb fcc fcf fco fcr fct ffa ffc fff ffh ffo ffr fft fha fhb fhc fhf fhh fho fhr foa fob foc fof foh foo for fot fra frb frc frf frh fro frr frt fta ftb ftc ftf fth fto ftr ftt haa hab hac haf hah hao har hat hba hbb hbc hbf hbh hbo hbr hbt hca hcb hcc hcf hch hco hcr hct hfa hfb hfc hff hfh hfo hfr hft hha hhb hhc hhf hhh hho hhr hht hoa hob hoc hof hoh hoo hor hot hr- hra hrb hrc hrf hrh hro hrr hrt hta htb htc htf hth hto htr htt oaa oab oac oaf oah oao oar oat ob- oba obb obc obf obh obo obr obt oc- oca ocb occ ocf och oco ocr oct of- ofa ofb ofc off ofo ofr oft oha ohc ohf ohh oho ohr oht oo- ooa oob ooc oof ooh ooo oor oot or- ora orb orc orf orh oro orr ort ot- ota otb otc otf oth oto otr ott ra- raa rab rac raf rah rao rar rat rba rbb rbc rbf rbh rbo rbr rbt rca rcb rcc rcf rch rco rcr rct rfa rfb rfc rff rfh rfo rfr rft rh- rha rhb rhc rhf rhh rho rhr rht roa rob roc rof roh roo ror rot rra rrb rrc rrf rrh rrr rrt rta rtb rtc rtf rto rtr rtt taa tab tac taf tah tao tar tat tba tbb tbc tbf tbh tbo tbr tbt tca tcb tcc tcf tch tco tcr tct tfa tfb tfc tff tfh tfo tfr tft th- tha thb thc thf thh tho thr tht to- toa tob toc tof toh too tor tot tra trb trc trf trh tro trr trt tta ttb ttc ttf tth tto ttr ttt

a-ha aaaa aaab aaac aaaf aaah aaar aaba aabb aabc aabh aabt aaca aacb aacc aacf aach aaco aacr aact aafa aafb aafc aaff aaha aaoo aara aarc aaro aart aata aatc aatf aatt abaa abab abac abaf abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abcf abch abcr abct abff abha abho abhr aboa abob abof aboh aboo abor abot abra abrc abro abta ac-t acaa acab acac acar acat acba acca accc accf acch acco acct acfc acft acha achh acho achr acht acoa acoh acor acot acr- acra acrc acro acrr acta actc actf acth acto actt afaa afao afar afat afca afcb afcc afch affa affc affo afft afoa afoo afor afr- afra afrc afro afta aftc ahab ahac ahah ahar ahat ahfa ahha ahoa ahor ahot ahra ahrc ahrr ahta ahto aoah aoba aoca aora aorb aort aotc aotf arab arac araf arah arar arat arba arbh arc- arca arch arco arct arfa arfb arfc arff arft arh- aroa arob aroo aror arr- arra arrc arrh arro arrr arrt arta artc arth arto artr at-t ataa atab atac atar atat atca atcc atcf atch atco atcr atfb atfc atha atho atob atoc atof ator atot atra atrc atro atta atto attr baaa baaf baah baar baat baba babb babo babr bac- baca bacc bach baco bact bafc baff bafo baft baha baho bahr baht baoh bar- bara barb barc barf barh baro barr bart bata batc batf bath bato batt bbbb bbch bbfc bbrc bcaa bcar bcat bcbc bcca bccc bcfc bcof bcor bcra bctc bfca bfta bftt bhao bhar bhat bhca bhcc bhff bhor bhot bhra bhrt boab boac boar boat boba bobb bobo boca boch boco bofa boff bofh boha boho bohr boht boob booc boof booh boor boot bor- bora borf borh boro borr bort bota botb both boto bott brab brac braf brah brao brat brca brcb brfc broa brob broc broh broo bror brot brrr brtc btaa btaf btcc btfc btob btor btrc btrt bttb c-bo caaa caab caac caaf caah caat caba cabf cabo cac- caca cacc cach caco cacr cafa cafb cafc caff caha caht caor cara carb carc carf caro carr cart cat- cata catb catc catf cath cato catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbfb cbfc cbha cbot cbrh cbrt cbta cbtc cbtf ccaa ccab ccac ccaf ccar ccat ccba ccbc ccca cccb cccc cccf ccfa ccfc ccff ccha cchr ccob ccoc ccra ccrc ccrf ccrt cctb cctc cctt cfaa cfab cfac cfao cfar cfbc cfbr cfbt cfca cfcb cfcf cfco cffb cffr cfoa cfor cfra cfrb cfrt cfta cftc cfth cftr chaa chab chac chaf chah chao char chat chca chch chfa chfc chfr chha choc choh choo chor chra chrb chrc chrf chro chrr chrt chto chtr chtt coat coba