-er -ic bbb bbc bbe bbi bbl bbr bcb bcc bce bci bcl bcr be- beb bec bee bei bel ber bi- bib bic bie bii bil bir blb blc ble bli bll blr brb bre bri brl brr c-- cbb cbc cbe cbi cbl cbr ccb ccc cce cci ccl ccr ce- ceb cec cee cei cel cer ci- cib cic cie cii cil cir cl- clb clc cle cli cll clr crb crc cre cri crl crr ebb ebc ebe ebi ebl ebr ec- ecb ecc ece eci ecl ecr eeb eec eee eel eer eib eic eie eii eil eir elb elc ele eli ell elr erb erc ere eri erl err ibb ibc ibe ibi ibl ibr icb icc ice ici icl icr ie- iec iee iei iel ier iib iic iie iii iil iir il- ilb ilc ile ili ill ilr ir- irb irc ire iri irl irr lbb lbc lbe lbi lbl lbr lcb lcc lce lci lcl lcr leb lec lee lei lel ler lib lic lie lii lil lir llb llc lle lli lll llr lrb lrc lri lrr rbb rbc rbe rbi rbl rbr rcb rcc rce rci rcl rcr re- reb rec ree rei rel rer rib ric rie rii ril rir rlc rle rli rll rlr rrb rrc rri rrl rrr