-th a-a a-b a-c a-t aaa aab aac aah aao aap aar aat ab- aba abb abc abh abo abp abr abt ac- aca acb acc ach aco acp acr act aha ahb ahc ahh aho ahp ahr aht aoa aob aoc aoh aoo aop aor aot ap- apa apb apc aph apo app apr apt ar- ara arb arc arh aro arp arr art at- ata atb atc ath ato atp atr att b-p baa bab bac bah bao bap bar bat bba bbb bbc bbh bbo bbp bbr bbt bca bcb bcc bch bco bcp bcr bct bha bhb bhc bhh bho bhp bhr bht boa bob boc boh boo bop bor bot bpa bpb bpc bph bpo bpp bpr bpt bra brb brh bro brp brr brt bta btb btc bth bto btp btr btt c-- caa cab cac cah cao cap car cat cba cbb cbc cbh cbo cbp cbr cbt cca ccb ccc cch cco ccp ccr cct ch- cha chb chc chh cho chp chr cht co- coa cob coc coh coo cop cor cot cpa cpb cpc cph cpo cpp cpr cpt cra crb crc crh cro crp crr crt cta ctb ctc cth cto ctp ctr ctt haa hab hac hah hao hap har hat hba hbb hbc hbh hbo hbp hbr hbt hca hcb hcc hch hco hcp hcr hct hha hhb hhc hhh hho hhp hhr hht hoa hob hoc hoh hoo hop hor hot hpa hpb hpc hph hpo hpp hpr hpt hr- hra hrb hrc hrh hro hrp hrr hrt hta htb htc hth hto htp htr htt oaa oab oac oah oao oap oar oat ob- oba obb obc obh obo obp obr obt oc- oca ocb occ och oco ocp ocr oct oha ohc ohh oho ohp ohr oht oo- ooa oob ooc ooh ooo oop oor oot op- opa opb opc oph opo opp opr opt or- ora orb orc orh oro orp orr ort ot- ota otb otc oth oto otp otr ott p-p paa pab pac pah pao pap par pat pba pbb pbc pbo pbp pbr pbt pca pcb pcc pch pco pcp pcr pct pha phb phc pho php phr pht poa pob poc poh poo pop por pot ppa ppb ppc pph ppo ppp ppr ppt pra prb prc prh pro prp prr prt pt- pta ptb ptc pth pto ptp ptr ptt ra- raa rab rac rah rao rap rar rat rba rbb rbc rbh rbo rbp rbr rbt rca rcb rcc rch rco rcp rcr rct rh- rha rhb rhc rhh rho rhp rhr rht roa rob roc roh roo rop ror rot rpa rpb rpc rph rpo rpp rpr rpt rra rrb rrc rrh rrp rrr rrt rta rtb rtc rto rtp rtr rtt taa tab tac tah tao tap tar tat tba tbb tbc tbh tbo tbp tbr tbt tca tcb tcc tch tco tcp tcr tct th- tha thb thc thh tho thp thr tht to- toa tob toc toh too top tor tot tpa tpb tpc tph tpo tpp tpr tpt tra trb trc trh tro trp trr trt tta ttb ttc tth tto ttp ttr ttt

a-ha aaaa aaab aaac aaah aaap aaar aaba aabb aabc aabh aabp aabt aaca aacb aacc aach aaco aacp aacr aact aaha aaoo aapa aapc aaph aapo aapt aara aarc aaro aarp aart aata aatc aatt abaa abab abac abap abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abch abcp abcr abct abha abho abhr aboa abob aboh aboo abor abot abpa abpc abpp abpr abra abrc abro abta ac-t acaa acab acac acap acar acat acba acca accc acch acco accp acct acha achh acho achp achr acht acoa acoh acop acor acot acpa acpr acpt acr- acra acrc acro acrr acta actc acth acto actt ahab ahac ahah ahar ahat ahha ahoa ahop ahor ahot ahra ahrc ahrr ahta ahto aoah aoba aoca aopo aora aorb aort aotc apac apah apao apap apar apat apba apbr apca apcb apcc apco apcr aph- apha aphc apo- apoc apoo apop apor apot appa appc apph appr appt apra aprc apro aprt apta aptc aptt arab arac arah arap arar arat arba arbh arc- arca arch arco arct arh- aroa arob aroo aror arpa arr- arra arrc arrh arro arrr arrt arta artc arth arto artr at-t ataa atab atac atap atar atat atca atcc atch atco atcr atha atho atob atoc atop ator atot atpr atra atrc atro atrp atta atto attp attr baaa baah baar baat baba babb babo babr bac- baca bacc bach baco bact baha baho bahr baht baoh bapa bapc bapp bapt bar- bara barb barc barh baro barr bart bata batc bath bato batt bbbb bbch bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcor bcpp bcra bctc bhao bhar bhat bhca bhcc bhor bhot bhra bhrt boab boac boar boat boba bobb bobo boca boch boco boha boho bohr boht boob booc booh boop boor boot bopa bopp bor- bora borh boro borr bort bota botb both boto bott bpcp bphc bpot bprc brab brac brah brao brat brca brcb broa brob broc broh broo bror brot brrr brtc btaa btbp btcc btob btor btrc btrt bttb c-bo caaa caab caac caah caap caat caba cabo cac- caca cacc cach caco cacr caha caht caor capa capb capc caph capo capp capt cara carb carc caro carp carr cart cat- cata catb catc cath cato catt cbac cbar cbat cbbc cbca cbcc cbcp cbcr cbct cbha cbot cbpc cbpp cbrh cbrt cbta cbtc ccaa ccab ccac ccap ccar ccat ccba ccbc ccca cccb cccc cccp ccha cchp cchr ccob ccoc ccpa ccpp ccpr ccra ccrc ccrp ccrt cctb cctc cctt chaa chab chac chah chao chap char chat chbp chca chch chcp chha choc choh choo chop chor chpa chpp chpr chra chrb chrc chro chrp chrr chrt chto chtr chtt coat coba cobb cobh cobo