-er -ey bbb bbc bbe bbh bbo bbr bbs bby bcb bcc bce bch bco bcr bcs bcy be- beb bec bee beh beo ber bes bey bhb bhc bhe bhh bho bhr bhs bob boc boe boh boo bor bos boy brb bre brh bro brr brs bry bsb bsc bse bsh bso bsr bss bsy by- byc bye byh byo byr bys c-- cbb cbc cbe cbh cbo cbr cbs cby ccb ccc cce cch cco ccr ccs ce- ceb cec cee ceh ceo cer ces cey ch- chb chc che chh cho chr chs chy co- cob coc coe coh coo cor cos coy crb crc cre crh cro crr crs cry csb csc cse csh cso csr css csy cyb cyc cye cyo cyr cys ebb ebc ebe ebh ebo ebr ebs eby ec- ecb ecc ece ech eco ecr ecs eeb eec eee eeo eer ees eey ehb ehc ehe ehh eho ehr ehs eo- eob eoc eoe eoh eoo eor eos erb erc ere erh ero err ers ery es- esb esc ese esh eso esr ess esy eyc eye eyo eyr eys hbb hbc hbe hbh hbo hbr hbs hby hcb hcc hce hch hco hcr hcs hcy he- heb hec hee heh heo her hes hey hhb hhc hhe hhh hho hhr hhs hhy hob hoc hoe hoh hoo hor hos hoy hr- hrb hrc hre hrh hro hrr hrs hsb hsc hse hsh hsr hss hsy hy- hyb hyc hye hyh hyo hyr hys hyy ob- obb obc obe obh obo obr obs oby oc- ocb occ och oco ocr ocs oeb oec oee oeh oeo oer oes oey ohc ohe ohh oho ohr ohs oo- oob ooc ooh ooo oor oos or- orb orc ore orh oro orr ors ory os- osb osc ose osh oso osr oss oye oyo oys rbb rbc rbe rbh rbo rbr rbs rcb rcc rce rch rco rcr rcs re- reb rec ree reh reo rer res rey rh- rhb rhc rhe rhh rho rhr rhs rob roc roe roh roo ror ros roy rrb rrc rrh rrr rrs rsb rsc rse rsh rso rsr rss ry- ryc rye ryo ryr rys ryy sbb sbc sbe sbh sbo sbr sbs sby scb scc sce sch sco scr scs se- seb sec see seh seo ser ses sey sh- shb shc she shh sho shr shs shy sob soc soe soh soo sor sos soy sr- srb src sre srh sro srr srs sry ss- ssb ssc sse ssh sso ssr sss sy- syb syc sye syh syr sys ybc ybe ybr ybs yby ycc yce ych yco ycs ycy yeb yec yee yeh yeo yer yes yey yhc yhe yhs yob yoc yoe yoo yor yos yoy yrc yre yro yrs ysb ysc yse yso ysr yss ysy yyb yyc yye yys yyy