-er -ey -ic bbb bbc bbe bbi bbr bby bcb bcc bce bci bcr bcy bcz be- beb bec bee bei ber bey bez bi- bib bic bie bii bir biy biz brb bre bri brr bry brz by- byc bye byi byr byz bze bzr bzz c-- cbb cbc cbe cbi cbr cby cbz ccb ccc cce cci ccr ccz ce- ceb cec cee cei cer cey cez ci- cib cic cie cii cir crb crc cre cri crr cry crz cyb cyc cye cyr cz- czc cze ebb ebc ebe ebi ebr eby ec- ecb ecc ece eci ecr eeb eec eee eer eey eib eic eie eii eir erb erc ere eri err ery erz eyc eye eyr eze ezr ezz ibb ibc ibe ibi ibr iby ibz icb icc ice ici icr icy icz ie- iec iee iei ier iey iib iic iie iii iir ir- irb irc ire iri irr iry iyc iye iyr iyy ize izi izy izz rbb rbc rbe rbi rbr rcb rcc rce rci rcr re- reb rec ree rei rer rey rez rib ric rie rii rir riy riz rrb rrc rri rrr ry- ryc rye ryr ryy ryz rzb rze rzy ybc ybe ybi ybr yby ybz ycc yce yci ycy yeb yec yee yei yer yey yez yie yii yir yiz yrc yre yyb yyc yye yyy yyz yzb yzr yzy zbb zbc zbr zby zce zeb zec zee zer zez zib zie zir ziz zzr zzy zzz