-er -th a-a a-b a-t aaa aab aae aah aap aar aas aat ab- aba abb abe abh abp abr abs abt aea aeb aee aeh aep aer aes aet aha ahb ahe ahh ahp ahr ahs aht ap- apa apb ape aph app apr aps apt ar- ara arb are arh arp arr ars art as- asa asb ase ash asp asr ass ast at- ata atb ate ath atp atr ats att b-p baa bab bae bah bap bar bas bat bba bbb bbe bbh bbp bbr bbs bbt be- bea beb bee beh bep ber bes bet bha bhb bhe bhh bhp bhr bhs bht bpa bpb bpe bph bpp bpr bps bpt bra brb bre brh brp brr brs brt bsa bsb bse bsh bsp bsr bss bst bta btb bte bth btp btr bts btt eaa eab eae eah eap ear eas eat eba ebb ebe ebh ebp ebr ebs ebt eea eeb eee eep eer ees eet eha ehb ehe ehh ehp ehr ehs eht ep- epa epb epe eph epp epr eps ept era erb ere erh erp err ers ert es- esa esb ese esh esp esr ess est eta etb ete eth etp etr ets ett haa hab hae hah hap har has hat hba hbb hbe hbh hbp hbr hbs hbt he- hea heb hee heh hep her hes het hha hhb hhe hhh hhp hhr hhs hht hpa hpb hpe hph hpp hpr hps hpt hr- hra hrb hre hrh hrp hrr hrs hrt hsa hsb hse hsh hsp hsr hss hst hta htb hte hth htp htr hts htt p-p paa pab pae pah pap par pas pat pba pbb pbe pbp pbr pbs pbt pea peb pee peh pep per pes pet pha phb phe php phr phs pht ppa ppb ppe pph ppp ppr pps ppt pra prb pre prh prp prr prs prt ps- psa psb pse psh psp psr pss pst pt- pta ptb pte pth ptp ptr pts ptt ra- raa rab rae rah rap rar ras rat rba rbb rbe rbh rbp rbr rbs rbt re- rea reb ree reh rep rer res ret rh- rha rhb rhe rhh rhp rhr rhs rht rpa rpb rpe rph rpp rpr rps rpt rra rrb rrh rrp rrr rrs rrt rsa rsb rse rsh rsp rsr rss rst rta rtb rte rtp rtr rts rtt saa sab sae sah sap sar sas sat sba sbb sbe sbh sbp sbr sbs sbt se- sea seb see seh sep ser ses set sh- sha shb she shh shp shr shs sht spa spb spe sph spp spr sps spt sr- sra srb sre srh srp srr srs srt ss- ssa ssb sse ssh ssp ssr sss sst sta stb ste sth stp str sts stt taa tab tae tah tap tar tas tat tba tbb tbe tbh tbp tbr tbs tbt te- tea teb tee teh tep ter tes tet th- tha thb the thh thp thr ths tht tpa tpb tpe tph tpp tpr tps tpt tra trb tre trh trp trr trs trt tsa tsb tse tsh tsp tsr tss tst tta ttb tte tth ttp ttr tts ttt