-er -ey b-p bbb bbc bbe bbo bbp bbr bbs bby bcb bcc bce bco bcp bcr bcs bcy be- beb bec bee beo bep ber bes bey bob boc boe boo bop bor bos boy bpb bpc bpe bpo bpp bpr bps bpy brb bre bro brp brr brs bry bsb bsc bse bso bsp bsr bss bsy by- byc bye byo byp byr bys c-- cbb cbc cbe cbo cbp cbr cbs cby ccb ccc cce cco ccp ccr ccs ce- ceb cec cee ceo cep cer ces cey co- cob coc coe coo cop cor cos coy cpb cpc cpe cpo cpp cpr cps crb crc cre cro crp crr crs cry csb csc cse cso csp csr css csy cyb cyc cye cyo cyp cyr cys ebb ebc ebe ebo ebp ebr ebs eby ec- ecb ecc ece eco ecr ecs eeb eec eee eeo eep eer ees eey eo- eob eoc eoe eoo eop eor eos ep- epb epc epe epo epp epr eps erb erc ere ero erp err ers ery es- esb esc ese eso esp esr ess esy eyc eye eyo eyp eyr eys ob- obb obc obe obo obp obr obs oby oc- ocb occ oco ocp ocr ocs oeb oec oee oeo oep oer oes oey oo- oob ooc ooo oop oor oos op- opb opc ope opo opp opr ops opy or- orb orc ore oro orp orr ors ory os- osb osc ose oso osp osr oss oye oyo oys p-p pbb pbc pbe pbo pbp pbr pbs pby pcb pcc pce pco pcp pcr pcs peb pec pee peo pep per pes pey pob poc poe poo pop por pos poy ppb ppc ppe ppo ppp ppr pps prb prc pre pro prp prr prs pry ps- psb psc pse pso psp psr pss psy py- pyb pyc pye pyo pyr pys rbb rbc rbe rbo rbp rbr rbs rcb rcc rce rco rcp rcr rcs re- reb rec ree reo rep rer res rey rob roc roe roo rop ror ros roy rpb rpc rpe rpo rpp rpr rps rrb rrc rrp rrr rrs rsb rsc rse rso rsp rsr rss ry- ryc rye ryo ryr rys ryy sbb sbc sbe sbo sbp sbr sbs sby scb scc sce sco scp scr scs se- seb sec see seo sep ser ses sey sob soc soe soo sop sor sos soy spb spc spe spo spp spr sps spy sr- srb src sre sro srp srr srs sry ss- ssb ssc sse sso ssp ssr sss sy- syb syc sye syp syr sys ybc ybe ybp ybr ybs yby ycc yce yco ycp ycs ycy yeb yec yee yeo yep yer yes yey yob yoc yoe yoo yop yor yos yoy ypo yps yrc yre yro yrp yrs ysb ysc yse yso ysp ysr yss ysy yyb yyc yye yys yyy