-er -ic c-- ccc cce cci ccl ccr ccx ce- cec cee cei cel cer cex ci- cic cie cii cil cir cix cl- clc cle cli cll clr clx crc cre cri crl crr crx cxc cxi cxl cxr cxx ec- ecc ece eci ecl ecr ecx eec eee eel eer eex eic eie eii eil eir eix elc ele eli ell elr elx erc ere eri erl err ex- exc exe exi exl exr exx icc ice ici icl icr ie- iec iee iei iel ier iex iic iie iii iil iir iix il- ilc ile ili ill ilr ilx ir- irc ire iri irl irr irx ixc ixe ixi ixl lcc lce lci lcl lcr lcx lec lee lei lel ler lex lic lie lii lil lir lix llc lle lli lll llr lrc lri lrr lxc lxi lxr lxx rcc rce rci rcl rcr rcx re- rec ree rei rel rer rex ric rie rii ril rir rix rlc rle rli rll rlr rrc rri rrl rrr rxr xci xcl xcr xcx xee xel xer xex xic xie xii xix xli xlr xrc xrx xxi xxl xxx