-er -ey -ic bbb bbc bbe bbi bbr bbs bby bcb bcc bce bci bcr bcs bcy be- beb bec bee bei ber bes bey bi- bib bic bie bii bir bis biy brb bre bri brr brs bry bsb bsc bse bsi bsr bss bsy by- byc bye byi byr bys c-- cbb cbc cbe cbi cbr cbs cby ccb ccc cce cci ccr ccs ce- ceb cec cee cei cer ces cey ci- cib cic cie cii cir cis crb crc cre cri crr crs cry csb csc cse csi csr css csy cyb cyc cye cyr cys ebb ebc ebe ebi ebr ebs eby ec- ecb ecc ece eci ecr ecs eeb eec eee eer ees eey eib eic eie eii eir eis erb erc ere eri err ers ery es- esb esc ese esi esr ess esy eyc eye eyr eys ibb ibc ibe ibi ibr ibs iby icb icc ice ici icr ics icy ie- iec iee iei ier ies iey iib iic iie iii iir iis ir- irb irc ire iri irr irs iry is- isb isc ise isi isr iss isy iyc iye iyr iys iyy rbb rbc rbe rbi rbr rbs rcb rcc rce rci rcr rcs re- reb rec ree rei rer res rey rib ric rie rii rir ris riy rrb rrc rri rrr rrs rsb rsc rse rsi rsr rss ry- ryc rye ryr rys ryy sbb sbc sbe sbi sbr sbs sby scb scc sce sci scr scs se- seb sec see sei ser ses sey sib sic sie sii sir sis sr- srb src sre sri srr srs sry ss- ssb ssc sse ssi ssr sss sy- syb syc sye syi syr sys ybc ybe ybi ybr ybs yby ycc yce yci ycs ycy yeb yec yee yei yer yes yey yie yii yir yis yrc yre yrs ysb ysc yse ysi ysr yss ysy yyb yyc yye yys yyy