-er c-- ccc ccd cce ccl ccn ccp ccr ccs cdc cdd cde cdl cdn cdp cdr cds ce- cec ced cee cel cen cep cer ces cl- clc cld cle cll cln clp clr cls cn- cnc cnd cne cnl cnn cnp cnr cns cpc cpd cpe cpl cpn cpp cpr cps crc crd cre crl crn crp crr crs csc csd cse csl csn csp csr css dcc dcd dce dcl dcn dcp dcr dcs ddc ddd dde ddl ddn ddp ddr dds de- dec ded dee del den dep der des dl- dlc dld dle dll dlp dlr dls dnc dnd dne dnl dnn dnp dnr dns dpc dpd dpe dpl dpn dpp dpr dps drc drd dre drl drn drp drr drs dsc dsd dse dsl dsn dsp dsr dss ec- ecc ecd ece ecl ecn ecr ecs ed- edc edd ede edl edn edp edr eds eec eed eee eel een eep eer ees elc eld ele ell eln elp elr els en- enc end ene enl enn enp enr ens ep- epc epd epe epl epn epp epr eps erc erd ere erl ern erp err ers es- esc esd ese esl esn esp esr ess l-p lcc lcd lce lcl lcn lcp lcr lcs ldc ldd lde ldl ldn ldp ldr lds lec led lee lel len lep ler les llc lld lle lll lln llp llr lls lnc lnd lne lnl lnn lnp lnr lns lpc lpd lpe lpl lpn lpp lpr lps lrc lrd lrn lrp lrr lrs lsc lsd lse lsl lsn lsp lsr lss ncc ncd nce ncl ncn ncp ncr ncs ndc ndd nde ndl ndn ndp ndr nds ne- nec ned nee nel nen nep ner nes nlc nld nle nll nln nlp nlr nls nnc nne nnl nnn nnp nns npc npd npe npl npn npp npr nps nrc nrd nre nrl nrn nrp nrr nrs nsc nsd nse nsl nsn nsp nsr nss p-p pcc pcd pce pcl pcn pcp pcr pcs pdc pdd pde pdl pdn pdp pdr pds pec ped pee pel pen pep per pes plc pld ple pll pln plp plr pls pn- pnc pnd pne pnl pnn pnp pnr pns ppc ppd ppe ppl ppn ppp ppr pps prc prd pre prl prn prp prr prs ps- psc psd pse psl psn psp psr pss rcc rcd rce rcl rcn rcp rcr rcs rdc rdd rde rdl rdn rdp rdr rds re- rec red ree rel ren rep rer res rlc rld rle rll rln rlp rlr rls rnc rnd rnn rnp rnr rns rpc rpd rpe rpl rpn rpp rpr rps rrc rrd rrl rrn rrp rrr rrs rsc rsd rse rsl rsn rsp rsr rss scc scd sce scl scn scp scr scs sdc sdd sde sdl sdn sdp sdr sds se- sec sed see sel sen sep ser ses slc sld sle sll sln slp slr sls snc snd sne snl snn snp snr sns spc spd spe spl spn spp spr sps sr- src srd sre srl srn srp srr srs ss- ssc ssd sse ssl ssn ssp ssr sss