-er c-- ccc ccd cce ccl ccn ccr ccs cdc cdd cde cdl cdn cdr cds ce- cec ced cee cel cen cer ces cl- clc cld cle cll cln clr cls cn- cnc cnd cne cnl cnn cnr cns crc crd cre crl crn crr crs csc csd cse csl csn csr css dcc dcd dce dcl dcn dcr dcs ddc ddd dde ddl ddn ddr dds de- dec ded dee del den der des dl- dlc dld dle dll dlr dls dnc dnd dne dnl dnn dnr dns drc drd dre drl drn drr drs dsc dsd dse dsl dsn dsr dss ec- ecc ecd ece ecl ecn ecr ecs ed- edc edd ede edl edn edr eds eec eed eee eel een eer ees elc eld ele ell eln elr els en- enc end ene enl enn enr ens erc erd ere erl ern err ers es- esc esd ese esl esn esr ess lcc lcd lce lcl lcn lcr lcs ldc ldd lde ldl ldn ldr lds lec led lee lel len ler les llc lld lle lll lln llr lls lnc lnd lne lnl lnn lnr lns lrc lrd lrn lrr lrs lsc lsd lse lsl lsn lsr lss ncc ncd nce ncl ncn ncr ncs ndc ndd nde ndl ndn ndr nds ne- nec ned nee nel nen ner nes nlc nld nle nll nln nlr nls nnc nne nnl nnn nns nrc nrd nre nrl nrn nrr nrs nsc nsd nse nsl nsn nsr nss rcc rcd rce rcl rcn rcr rcs rdc rdd rde rdl rdn rdr rds re- rec red ree rel ren rer res rlc rld rle rll rln rlr rls rnc rnd rnn rnr rns rrc rrd rrl rrn rrr rrs rsc rsd rse rsl rsn rsr rss scc scd sce scl scn scr scs sdc sdd sde sdl sdn sdr sds se- sec sed see sel sen ser ses slc sld sle sll sln slr sls snc snd sne snl snn snr sns sr- src srd sre srl srn srr srs ss- ssc ssd sse ssl ssn ssr sss