-er -ey -ic bbb bbc bbe bbi bbk bbr bby bcb bcc bce bci bck bcr bcy be- beb bec bee bei bek ber bey bi- bib bic bie bii bik bir biy bkb bkc bke bkk bkr brb bre bri brk brr bry by- byc bye byi byk byr c-- cbb cbc cbe cbi cbk cbr cby ccb ccc cce cci cck ccr ce- ceb cec cee cei cek cer cey ci- cib cic cie cii cik cir ckb ckc cki cky crb crc cre cri crk crr cry cyb cyc cye cyk cyr ebb ebc ebe ebi ebk ebr eby ec- ecb ecc ece eci eck ecr eeb eec eee eek eer eey eib eic eie eii eik eir ekb ekc eke eki ekr eky erb erc ere eri erk err ery eyc eye eyr ibb ibc ibe ibi ibk ibr iby icb icc ice ici ick icr icy ie- iec iee iei iek ier iey iib iic iie iii iir ikb ikc ike iki ikk ikr ir- irb irc ire iri irk irr iry iyc iye iyr iyy kbb kbc kbe kbi kbk kbr kcb kcc kce kci kck kcr ke- keb kec kee kei kek ker key kib kic kie kii kik kir kkb kkc kke kki kkk kkr kky krc kri krk krr kry kyc kye kyr rbb rbc rbe rbi rbk rbr rcb rcc rce rci rcr re- reb rec ree rei rek rer rey rib ric rie rii rik rir riy rkb rkc rke rkk rky rrb rrc rri rrk rrr ry- ryc rye ryk ryr ryy ybc ybe ybi ybr yby ycc yce yci ycy yeb yec yee yei yek yer yey yie yii yir yki ykk yrc yre yyb yyc yye yyy