-er -ey a-a a-b a-c a-t aaa aab aac aae aap aar aat aay ab- aba abb abc abe abp abr abt aby ac- aca acb acc ace acp acr act acy aea aeb aec aee aep aer aet aey ap- apa apb apc ape app apr apt apy ar- ara arb arc are arp arr art ary at- ata atb atc ate atp atr att ay- aya ayc aye ayp ayr ayt b-p baa bab bac bae bap bar bat bay bba bbb bbc bbe bbp bbr bbt bby bca bcb bcc bce bcp bcr bct bcy be- bea beb bec bee bep ber bet bey bpa bpb bpc bpe bpp bpr bpt bpy bra brb bre brp brr brt bry bta btb btc bte btp btr btt bty by- bya byc bye byp byr byt c-- caa cab cac cae cap car cat cay cba cbb cbc cbe cbp cbr cbt cby cca ccb ccc cce ccp ccr cct ce- cea ceb cec cee cep cer cet cey cpa cpb cpc cpe cpp cpr cpt cra crb crc cre crp crr crt cry cta ctb ctc cte ctp ctr ctt cty cya cyb cyc cye cyp cyr cyt eaa eab eac eae eap ear eat eba ebb ebc ebe ebp ebr ebt eby ec- eca ecb ecc ece ecr ect eea eeb eec eee eep eer eet eey ep- epa epb epc epe epp epr ept era erb erc ere erp err ert ery eta etb etc ete etp etr ett ety eya eyc eye eyp eyr eyt p-p paa pab pac pae pap par pat pay pba pbb pbc pbe pbp pbr pbt pby pca pcb pcc pce pcp pcr pct pea peb pec pee pep per pet pey ppa ppb ppc ppe ppp ppr ppt pra prb prc pre prp prr prt pry pt- pta ptb ptc pte ptp ptr ptt pty py- pya pyb pyc pye pyr pyt ra- raa rab rac rae rap rar rat ray rba rbb rbc rbe rbp rbr rbt rca rcb rcc rce rcp rcr rct re- rea reb rec ree rep rer ret rey rpa rpb rpc rpe rpp rpr rpt rra rrb rrc rrp rrr rrt rta rtb rtc rte rtp rtr rtt rty ry- rya ryc rye ryr ryy taa tab tac tae tap tar tat tay tba tbb tbc tbe tbp tbr tbt tca tcb tcc tce tcp tcr tct te- tea teb tec tee tep ter tet tey tpa tpb tpc tpe tpp tpr tpt tra trb trc tre trp trr trt try tta ttb ttc tte ttp ttr ttt tty tya tyc tye typ tyr tyt yaa yab yac yae yap yar yat yay ybc ybe ybp ybr yby yca ycc yce ycp ycy yea yeb yec yee yep yer yet yey ypa yra yrc yre yrp yrt yta ytc yte ytp ytr ytt yyb yyc yye yyt yyy