-er -th a-a a-b a-c a-t aaa aab aac aae aah aap aar aat ab- aba abb abc abe abh abp abr abt ac- aca acb acc ace ach acp acr act aea aeb aec aee aeh aep aer aet aha ahb ahc ahe ahh ahp ahr aht ap- apa apb apc ape aph app apr apt ar- ara arb arc are arh arp arr art at- ata atb atc ate ath atp atr att b-p baa bab bac bae bah bap bar bat bba bbb bbc bbe bbh bbp bbr bbt bca bcb bcc bce bch bcp bcr bct be- bea beb bec bee beh bep ber bet bha bhb bhc bhe bhh bhp bhr bht bpa bpb bpc bpe bph bpp bpr bpt bra brb bre brh brp brr brt bta btb btc bte bth btp btr btt c-- caa cab cac cae cah cap car cat cba cbb cbc cbe cbh cbp cbr cbt cca ccb ccc cce cch ccp ccr cct ce- cea ceb cec cee ceh cep cer cet ch- cha chb chc che chh chp chr cht cpa cpb cpc cpe cph cpp cpr cpt cra crb crc cre crh crp crr crt cta ctb ctc cte cth ctp ctr ctt eaa eab eac eae eah eap ear eat eba ebb ebc ebe ebh ebp ebr ebt ec- eca ecb ecc ece ech ecr ect eea eeb eec eee eep eer eet eha ehb ehc ehe ehh ehp ehr eht ep- epa epb epc epe eph epp epr ept era erb erc ere erh erp err ert eta etb etc ete eth etp etr ett haa hab hac hae hah hap har hat hba hbb hbc hbe hbh hbp hbr hbt hca hcb hcc hce hch hcp hcr hct he- hea heb hec hee heh hep her het hha hhb hhc hhe hhh hhp hhr hht hpa hpb hpc hpe hph hpp hpr hpt hr- hra hrb hrc hre hrh hrp hrr hrt hta htb htc hte hth htp htr htt p-p paa pab pac pae pah pap par pat pba pbb pbc pbe pbp pbr pbt pca pcb pcc pce pch pcp pcr pct pea peb pec pee peh pep per pet pha phb phc phe php phr pht ppa ppb ppc ppe pph ppp ppr ppt pra prb prc pre prh prp prr prt pt- pta ptb ptc pte pth ptp ptr ptt ra- raa rab rac rae rah rap rar rat rba rbb rbc rbe rbh rbp rbr rbt rca rcb rcc rce rch rcp rcr rct re- rea reb rec ree reh rep rer ret rh- rha rhb rhc rhe rhh rhp rhr rht rpa rpb rpc rpe rph rpp rpr rpt rra rrb rrc rrh rrp rrr rrt rta rtb rtc rte rtp rtr rtt taa tab tac tae tah tap tar tat tba tbb tbc tbe tbh tbp tbr tbt tca tcb tcc tce tch tcp tcr tct te- tea teb tec tee teh tep ter tet th- tha thb thc the thh thp thr tht tpa tpb tpc tpe tph tpp tpr tpt tra trb trc tre trh trp trr trt tta ttb ttc tte tth ttp ttr ttt