-er c-- ccc ccd cce cck ccl ccp ccr ccs cdc cdd cde cdk cdl cdp cdr cds ce- cec ced cee cek cel cep cer ces ckc ckd cks cl- clc cld cle clk cll clp clr cls cpc cpd cpe cpk cpl cpp cpr cps crc crd cre crk crl crp crr crs csc csd cse csk csl csp csr css dcc dcd dce dck dcl dcp dcr dcs ddc ddd dde ddk ddl ddp ddr dds de- dec ded dee dek del dep der des dkc dke dkk dkl dkp dkr dks dl- dlc dld dle dlk dll dlp dlr dls dpc dpd dpe dpk dpl dpp dpr dps drc drd dre drk drl drp drr drs dsc dsd dse dsk dsl dsp dsr dss ec- ecc ecd ece eck ecl ecr ecs ed- edc edd ede edk edl edp edr eds eec eed eee eek eel eep eer ees ekc ekd eke ekl ekp ekr eks elc eld ele elk ell elp elr els ep- epc epd epe epl epp epr eps erc erd ere erk erl erp err ers es- esc esd ese esk esl esp esr ess kcc kcd kce kck kcl kcp kcr kcs kdc kde kdk kdl kdp kdr kds ke- kec ked kee kek kel kep ker kes kkc kke kkk kkl kkp kkr kks kl- klc kld klr kls kpc kpd kpe kpk kpl kpp kpr kps krc krd krk krl krp krr krs ksc ksd kse ksk ksl ksp ksr kss l-p lcc lcd lce lck lcl lcp lcr lcs ldc ldd lde ldk ldl ldp ldr lds lec led lee lek lel lep ler les lkl lkp lkr lks llc lld lle llk lll llp llr lls lpc lpd lpe lpk lpl lpp lpr lps lrc lrd lrk lrp lrr lrs lsc lsd lse lsk lsl lsp lsr lss p-p pcc pcd pce pck pcl pcp pcr pcs pdc pdd pde pdk pdl pdp pdr pds pec ped pee pek pel pep per pes pkc pkd pke pkl pkp pkr pks plc pld ple plk pll plp plr pls ppc ppd ppe ppk ppl ppp ppr pps prc prd pre prk prl prp prr prs ps- psc psd pse psk psl psp psr pss rcc rcd rce rcl rcp rcr rcs rdc rdd rde rdl rdp rdr rds re- rec red ree rek rel rep rer res rkc rke rkk rkp rks rlc rld rle rll rlp rlr rls rpc rpd rpe rpk rpl rpp rpr rps rrc rrd rrk rrl rrp rrr rrs rsc rsd rse rsk rsl rsp rsr rss scc scd sce sck scl scp scr scs sdc sdd sde sdk sdl sdp sdr sds se- sec sed see sek sel sep ser ses sk- skc skd ske skk skl skp skr sks slc sld sle slk sll slp slr sls spc spd spe spk spl spp spr sps sr- src srd sre srk srl srp srr srs ss- ssc ssd sse ssk ssl ssp ssr sss