-er -ic bbb bbc bbe bbi bbr bbs bcb bcc bce bci bcr bcs bcz be- beb bec bee bei ber bes bez bi- bib bic bie bii bir bis biz brb bre bri brr brs brz bsb bsc bse bsi bsr bss bze bzr bzs bzz c-- cbb cbc cbe cbi cbr cbs cbz ccb ccc cce cci ccr ccs ccz ce- ceb cec cee cei cer ces cez ci- cib cic cie cii cir cis crb crc cre cri crr crs crz csb csc cse csi csr css csz cz- czc cze ebb ebc ebe ebi ebr ebs ec- ecb ecc ece eci ecr ecs eeb eec eee eer ees eib eic eie eii eir eis erb erc ere eri err ers erz es- esb esc ese esi esr ess eze ezr ezs ezz ibb ibc ibe ibi ibr ibs ibz icb icc ice ici icr ics icz ie- iec iee iei ier ies iib iic iie iii iir iis ir- irb irc ire iri irr irs is- isb isc ise isi isr iss ize izi izz rbb rbc rbe rbi rbr rbs rcb rcc rce rci rcr rcs re- reb rec ree rei rer res rez rib ric rie rii rir ris riz rrb rrc rri rrr rrs rsb rsc rse rsi rsr rss rzb rze sbb sbc sbe sbi sbr sbs scb scc sce sci scr scs se- seb sec see sei ser ses sez sib sic sie sii sir sis sr- srb src sre sri srr srs ss- ssb ssc sse ssi ssr sss ssz sze szi szr zbb zbc zbr zbs zce zcs zeb zec zee zer zes zez zib zie zir zis ziz zrs zse zsi zsz zzr zzs zzz