c-- ccc ccd cce ccl ccp ccs cdc cdd cde cdl cdp cds ce- cec ced cee cel cep ces cl- clc cld cle cll clp cls cpc cpd cpe cpl cpp cps csc csd cse csl csp css dcc dcd dce dcl dcp dcs ddc ddd dde ddl ddp dds de- dec ded dee del dep des dl- dlc dld dle dll dlp dls dpc dpd dpe dpl dpp dps dsc dsd dse dsl dsp dss ec- ecc ecd ece ecl ecs ed- edc edd ede edl edp eds eec eed eee eel eep ees elc eld ele ell elp els ep- epc epd epe epl epp eps es- esc esd ese esl esp ess l-p lcc lcd lce lcl lcp lcs ldc ldd lde ldl ldp lds lec led lee lel lep les llc lld lle lll llp lls lpc lpd lpe lpl lpp lps lsc lsd lse lsl lsp lss p-p pcc pcd pce pcl pcp pcs pdc pdd pde pdl pdp pds pec ped pee pel pep pes plc pld ple pll plp pls ppc ppd ppe ppl ppp pps ps- psc psd pse psl psp pss scc scd sce scl scp scs sdc sdd sde sdl sdp sds se- sec sed see sel sep ses slc sld sle sll slp sls spc spd spe spl spp sps ss- ssc ssd sse ssl ssp sss