-th a-a a-b a-c a-t aaa aab aac aah aap aar aat ab- aba abb abc abh abp abr abt ac- aca acb acc ach acp acr act aha ahb ahc ahh ahp ahr aht ap- apa apb apc aph app apr apt ar- ara arb arc arh arp arr art at- ata atb atc ath atp atr att b-p baa bab bac bah bap bar bat bba bbb bbc bbh bbp bbr bbt bca bcb bcc bch bcp bcr bct bha bhb bhc bhh bhp bhr bht bpa bpb bpc bph bpp bpr bpt bra brb brh brp brr brt bta btb btc bth btp btr btt c-- caa cab cac cah cap car cat cba cbb cbc cbh cbp cbr cbt cca ccb ccc cch ccp ccr cct ch- cha chb chc chh chp chr cht cpa cpb cpc cph cpp cpr cpt cra crb crc crh crp crr crt cta ctb ctc cth ctp ctr ctt haa hab hac hah hap har hat hba hbb hbc hbh hbp hbr hbt hca hcb hcc hch hcp hcr hct hha hhb hhc hhh hhp hhr hht hpa hpb hpc hph hpp hpr hpt hr- hra hrb hrc hrh hrp hrr hrt hta htb htc hth htp htr htt p-p paa pab pac pah pap par pat pba pbb pbc pbp pbr pbt pca pcb pcc pch pcp pcr pct pha phb phc php phr pht ppa ppb ppc pph ppp ppr ppt pra prb prc prh prp prr prt pt- pta ptb ptc pth ptp ptr ptt ra- raa rab rac rah rap rar rat 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 taa tab tac tah tap tar tat tba tbb tbc tbh tbp tbr tbt tca tcb tcc tch tcp tcr tct th- tha thb thc thh thp thr tht tpa tpb tpc tph tpp tpr tpt tra trb trc trh trp trr trt tta ttb ttc tth ttp ttr ttt