-er -th a-a a-b a-c a-t aaa aab aac aae aah aap aar aas aat ab- aba abb abc abe abh abp abr abs abt ac- aca acb acc ace ach acp acr acs act aea aeb aec aee aeh aep aer aes aet aha ahb ahc ahe ahh ahp ahr ahs aht ap- apa apb apc ape aph app apr aps apt ar- ara arb arc are arh arp arr ars art as- asa asb asc ase ash asp asr ass ast at- ata atb atc ate ath atp atr ats att b-p baa bab bac bae bah bap bar bas bat bba bbb bbc bbe bbh bbp bbr bbs bbt bca bcb bcc bce bch bcp bcr bcs bct be- bea beb bec bee beh bep ber bes bet bha bhb bhc bhe bhh bhp bhr bhs bht bpa bpb bpc bpe bph bpp bpr bps bpt bra brb bre brh brp brr brs brt bsa bsb bsc bse bsh bsp bsr bss bst bta btb btc bte bth btp btr bts btt c-- caa cab cac cae cah cap car cas cat cba cbb cbc cbe cbh cbp cbr cbs cbt cca ccb ccc cce cch ccp ccr ccs cct ce- cea ceb cec cee ceh cep cer ces cet ch- cha chb chc che chh chp chr chs cht cpa cpb cpc cpe cph cpp cpr cps cpt cra crb crc cre crh crp crr crs crt csa csb csc cse csh csp csr css cst cta ctb ctc cte cth ctp ctr cts ctt eaa eab eac eae eah eap ear eas eat eba ebb ebc ebe ebh ebp ebr ebs ebt ec- eca ecb ecc ece ech ecr ecs ect eea eeb eec eee eep eer ees eet eha ehb ehc ehe ehh ehp ehr ehs eht ep- epa epb epc epe eph epp epr eps ept era erb erc ere erh erp err ers ert es- esa esb esc ese esh esp esr ess est eta etb etc ete eth etp etr ets ett haa hab hac hae hah hap har has hat hba hbb hbc hbe hbh hbp hbr hbs hbt hca hcb hcc hce hch hcp hcr hcs hct he- hea heb hec hee heh hep her hes het hha hhb hhc hhe hhh hhp hhr hhs hht hpa hpb hpc hpe hph hpp hpr hps hpt hr- hra hrb hrc hre hrh hrp hrr hrs hrt hsa hsb hsc hse hsh hsp hsr hss hst hta htb htc hte hth htp htr hts htt p-p paa pab pac pae pah pap par pas pat pba pbb pbc pbe pbp pbr pbs pbt pca pcb pcc pce pch pcp pcr pcs pct pea peb pec pee peh pep per pes pet pha phb phc phe php phr phs pht ppa ppb ppc ppe pph ppp ppr pps ppt pra prb prc pre prh prp prr prs prt ps- psa psb psc pse psh psp psr pss pst pt- pta ptb ptc pte pth ptp ptr pts ptt ra- raa rab rac rae rah rap rar ras rat rba rbb rbc rbe rbh rbp rbr rbs rbt rca rcb rcc rce rch rcp rcr rcs rct re- rea reb rec ree reh rep rer res ret rh- rha rhb rhc rhe rhh rhp rhr rhs rht rpa rpb rpc rpe rph rpp rpr rps rpt rra rrb rrc rrh rrp rrr rrs rrt rsa rsb rsc rse rsh rsp rsr rss rst rta rtb rtc rte rtp rtr rts rtt saa sab sac sae sah sap sar sas sat sba sbb sbc sbe sbh sbp sbr sbs sbt sca scb scc sce sch scp scr scs sct se- sea seb sec see seh sep ser ses set sh- sha shb shc she shh shp shr shs sht spa spb spc spe sph spp spr sps spt sr- sra srb src sre srh srp srr srs srt ss- ssa ssb ssc sse ssh ssp ssr sss sst sta stb stc ste sth stp str sts stt taa tab tac tae tah tap tar tas tat tba tbb tbc tbe tbh tbp tbr tbs tbt tca tcb tcc tce tch tcp tcr tcs tct te- tea teb tec tee teh tep ter tes tet th- tha thb thc the thh thp thr ths tht tpa tpb tpc tpe tph tpp tpr tps tpt tra trb trc tre trh trp trr trs trt tsa tsb tsc tse tsh tsp tsr tss tst tta ttb ttc tte tth ttp ttr tts ttt