-er -ic bbb bbc bbe bbi bbl bbr bbs bbx bcb bcc bce bci bcl bcr bcs bcx be- beb bec bee bei bel ber bes bex bi- bib bic bie bii bil bir bis bix blb blc ble bli bll blr bls blx brb bre bri brl brr brs brx bsb bsc bse bsi bsl bsr bss bsx bxb bxi bxl bxx c-- cbb cbc cbe cbi cbl cbr cbs cbx ccb ccc cce cci ccl ccr ccs ccx ce- ceb cec cee cei cel cer ces cex ci- cib cic cie cii cil cir cis cix cl- clb clc cle cli cll clr cls clx crb crc cre cri crl crr crs crx csb csc cse csi csl csr css csx cxc cxi cxl cxr cxs cxx ebb ebc ebe ebi ebl ebr ebs ebx ec- ecb ecc ece eci ecl ecr ecs ecx eeb eec eee eel eer ees eex eib eic eie eii eil eir eis eix elb elc ele eli ell elr els elx erb erc ere eri erl err ers es- esb esc ese esi esl esr ess esx ex- exc exe exi exl exr exs exx ibb ibc ibe ibi ibl ibr ibs ibx icb icc ice ici icl icr ics ie- iec iee iei iel ier ies iex iib iic iie iii iil iir iis iix il- ilb ilc ile ili ill ilr ils ilx ir- irb irc ire iri irl irr irs irx is- isb isc ise isi isl isr iss ixc ixe ixi ixl lbb lbc lbe lbi lbl lbr lbs lbx lcb lcc lce lci lcl lcr lcs lcx leb lec lee lei lel ler les lex lib lic lie lii lil lir lis lix llb llc lle lli lll llr lls lrb lrc lri lrr lrs lsb lsc lse lsi lsl lsr lss lxc lxi lxr lxx rbb rbc rbe rbi rbl rbr rbs rbx rcb rcc rce rci rcl rcr rcs rcx re- reb rec ree rei rel rer res rex rib ric rie rii ril rir ris rix rlc rle rli rll rlr rls rrb rrc rri rrl rrr rrs rsb rsc rse rsi rsl rsr rss rsx rxr rxs sbb sbc sbe sbi sbl sbr sbs sbx scb scc sce sci scl scr scs scx se- seb sec see sei sel ser ses sex sib sic sie sii sil sir sis six slb slc sle sli sll slr sls slx sr- srb src sre sri srl srr srs srx ss- ssb ssc sse ssi ssl ssr sss ssx sxc sxi sxl sxs xbc xbe xbl xbr xbx xcb xci xcl xcr xcx xee xel xer xes xex xic xie xii xis xix xlb xli xlr xls xrc xrx xsb xsc xsi xsl xss xxi xxl xxx