-th a-a a-b a-c a-t aaa aab aac aah aap aar aat aay ab- aba abb abc abh abp abr abt aby ac- aca acb acc ach acp acr act acy aha ahb ahc ahh ahp ahr aht ahy ap- apa apb apc aph app apr apt apy ar- ara arb arc arh arp arr art ary at- ata atb atc ath atp atr att ay- aya ayc ayh ayp ayr ayt b-p baa bab bac bah bap bar bat bay bba bbb bbc bbh bbp bbr bbt bby bca bcb bcc bch bcp bcr bct bcy bha bhb bhc bhh bhp bhr bht bpa bpb bpc bph bpp bpr bpt bpy bra brb brh brp brr brt bry bta btb btc bth btp btr btt bty by- bya byc byh byp byr byt c-- caa cab cac cah cap car cat cay cba cbb cbc cbh cbp cbr cbt cby cca ccb ccc cch ccp ccr cct ch- cha chb chc chh chp chr cht chy cpa cpb cpc cph cpp cpr cpt cra crb crc crh crp crr crt cry cta ctb ctc cth ctp ctr ctt cty cya cyb cyc cyp cyr cyt haa hab hac hah hap har hat hay hba hbb hbc hbh hbp hbr hbt hby hca hcb hcc hch hcp hcr hct hcy hha hhb hhc hhh hhp hhr hht hhy hpa hpb hpc hph hpp hpr hpt hpy hr- hra hrb hrc hrh hrp hrr hrt hta htb htc hth htp htr htt hty hy- hya hyb hyc hyh hyp hyr hyt hyy p-p paa pab pac pah pap par pat pay pba pbb pbc pbp pbr pbt pby pca pcb pcc pch pcp pcr pct pha phb phc php phr pht phy ppa ppb ppc pph ppp ppr ppt pra prb prc prh prp prr prt pry pt- pta ptb ptc pth ptp ptr ptt pty py- pya pyb pyc pyr pyt ra- raa rab rac rah rap rar rat ray rba rbb rbc rbh rbp rbr rbt rca rcb rcc rch rcp rcr rct rh- rha rhb rhc rhh rhp rhr rht rpa rpb rpc rph rpp rpr rpt rra rrb rrc rrh rrp rrr rrt rta rtb rtc rtp rtr rtt rty ry- rya ryc ryr ryy taa tab tac tah tap tar tat tay tba tbb tbc tbh tbp tbr tbt tca tcb tcc tch tcp tcr tct th- tha thb thc thh thp thr tht thy tpa tpb tpc tph tpp tpr tpt tra trb trc trh trp trr trt try tta ttb ttc tth ttp ttr ttt tty tya tyc typ tyr tyt yaa yab yac yah yap yar yat yay ybc ybp ybr yby yca ycc ych ycp ycy yha yhc yht ypa yra yrc yrp yrt yta ytc yth ytp ytr ytt yyb yyc yyt yyy