-er -ey b-p bbb bbc bbe bbp bbr bbs bbt bby bcb bcc bce bcp bcr bcs bct bcy be- beb bec bee bep ber bes bet bey bpb bpc bpe bpp bpr bps bpt bpy brb bre brp brr brs brt bry bsb bsc bse bsp bsr bss bst bsy btb btc bte btp btr bts btt bty by- byc bye byp byr bys byt c-- cbb cbc cbe cbp cbr cbs cbt cby ccb ccc cce ccp ccr ccs cct ce- ceb cec cee cep cer ces cet cey cpb cpc cpe cpp cpr cps cpt crb crc cre crp crr crs crt cry csb csc cse csp csr css cst csy ctb ctc cte ctp ctr cts ctt cty cyb cyc cye cyp cyr cys cyt ebb ebc ebe ebp ebr ebs ebt eby ec- ecb ecc ece ecr ecs ect eeb eec eee eep eer ees eet eey ep- epb epc epe epp epr eps ept erb erc ere erp err ers ert ery es- esb esc ese esp esr ess est esy etb etc ete etp etr ets ett ety eyc eye eyp eyr eys eyt p-p pbb pbc pbe pbp pbr pbs pbt pby pcb pcc pce pcp pcr pcs pct peb pec pee pep per pes pet pey ppb ppc ppe ppp ppr pps ppt prb prc pre prp prr prs prt pry ps- psb psc pse psp psr pss pst psy pt- ptb ptc pte ptp ptr pts ptt pty py- pyb pyc pye pyr pys pyt rbb rbc rbe rbp rbr rbs rbt rcb rcc rce rcp rcr rcs rct re- reb rec ree rep rer res ret rey rpb rpc rpe rpp rpr rps rpt rrb rrc rrp rrr rrs rrt rsb rsc rse rsp rsr rss rst rtb rtc rte rtp rtr rts rtt rty ry- ryc rye ryr rys ryy sbb sbc sbe sbp sbr sbs sbt sby scb scc sce scp scr scs sct se- seb sec see sep ser ses set sey spb spc spe spp spr sps spt spy sr- srb src sre srp srr srs srt sry ss- ssb ssc sse ssp ssr sss sst stb stc ste stp str sts stt sty sy- syb syc sye syp syr sys syt tbb tbc tbe tbp tbr tbs tbt tcb tcc tce tcp tcr tcs tct te- teb tec tee tep ter tes tet tey tpb tpc tpe tpp tpr tps tpt trb trc tre trp trr trs trt try tsb tsc tse tsp tsr tss tst tsy ttb ttc tte ttp ttr tts ttt tty tyc tye typ tyr tys tyt ybc ybe ybp ybr ybs yby ycc yce ycp ycs ycy yeb yec yee yep yer yes yet yey yps yrc yre yrp yrs yrt ysb ysc yse ysp ysr yss yst ysy ytc yte ytp ytr yts ytt yyb yyc yye yys yyt yyy