-er -ic c-- ccc ccd cce cci ccl ccr ccs cdc cdd cde cdi cdl cdr cds ce- cec ced cee cei cel cer ces ci- cic cid cie cii cil cir cis cl- clc cld cle cli cll clr cls crc crd cre cri crl crr crs csc csd cse csi csl csr css dcc dcd dce dci dcl dcr dcs ddc ddd dde ddi ddl ddr dds de- dec ded dee dei del der des di- dic did die dii dil dir dis dl- dlc dld dle dli dll dlr dls drc drd dre dri drl drr drs dsc dsd dse dsi dsl dsr dss ec- ecc ecd ece eci ecl ecr ecs ed- edc edd ede edi edl edr eds eec eed eee eel eer ees eic eid eie eii eil eir eis elc eld ele eli ell elr els erc erd ere eri erl err ers es- esc esd ese esi esl esr ess i-d icc icd ice ici icl icr ics idc idd ide idi idl idr ids ie- iec ied iee iei iel ier ies iic iid iie iii iil iir iis il- ilc ild ile ili ill ilr ils ir- irc ird ire iri irl irr irs is- isc isd ise isi isl isr iss lcc lcd lce lci lcl lcr lcs ldc ldd lde ldi ldl ldr lds lec led lee lei lel ler les lic lid lie lii lil lir lis llc lld lle lli lll llr lls lrc lrd lri lrr lrs lsc lsd lse lsi lsl lsr lss rcc rcd rce rci rcl rcr rcs rdc rdd rde rdi rdl rdr rds re- rec red ree rei rel rer res ric rid rie rii ril rir ris rlc rld rle rli rll rlr rls rrc rrd rri rrl rrr rrs rsc rsd rse rsi rsl rsr rss scc scd sce sci scl scr scs sdc sdd sde sdi sdl sdr sds se- sec sed see sei sel ser ses sic sid sie sii sil sir sis slc sld sle sli sll slr sls sr- src srd sre sri srl srr srs ss- ssc ssd sse ssi ssl ssr sss