-er c-- ccc ccd cce ccl ccp ccr cdc cdd cde cdl cdp cdr ce- cec ced cee cel cep cer cl- clc cld cle cll clp clr cpc cpd cpe cpl cpp cpr crc crd cre crl crp crr dcc dcd dce dcl dcp dcr ddc ddd dde ddl ddp ddr de- dec ded dee del dep der dl- dlc dld dle dll dlp dlr dpc dpd dpe dpl dpp dpr drc drd dre drl drp drr ec- ecc ecd ece ecl ecr ed- edc edd ede edl edp edr eec eed eee eel eep eer elc eld ele ell elp elr ep- epc epd epe epl epp epr erc erd ere erl erp err l-p lcc lcd lce lcl lcp lcr ldc ldd lde ldl ldp ldr lec led lee lel lep ler llc lld lle lll llp llr lpc lpd lpe lpl lpp lpr lrc lrd lrp lrr p-p pcc pcd pce pcl pcp pcr pdc pdd pde pdl pdp pdr pec ped pee pel pep per plc pld ple pll plp plr ppc ppd ppe ppl ppp ppr prc prd pre prl prp prr rcc rcd rce rcl rcp rcr rdc rdd rde rdl rdp rdr re- rec red ree rel rep rer rlc rld rle rll rlp rlr rpc rpd rpe rpl rpp rpr rrc rrd rrl rrp rrr