c-- ccc ccd cce cck ccl ccp cdc cdd cde cdk cdl cdp ce- cec ced cee cek cel cep ckc ckd cl- clc cld cle clk cll clp cpc cpd cpe cpk cpl cpp dcc dcd dce dck dcl dcp ddc ddd dde ddk ddl ddp de- dec ded dee dek del dep dkc dke dkk dkl dkp dl- dlc dld dle dlk dll dlp dpc dpd dpe dpk dpl dpp ec- ecc ecd ece eck ecl ed- edc edd ede edk edl edp eec eed eee eek eel eep ekc ekd eke ekl ekp elc eld ele elk ell elp ep- epc epd epe epl epp kcc kcd kce kck kcl kcp kdc kde kdk kdl kdp ke- kec ked kee kek kel kep kkc kke kkk kkl kkp kl- klc kld kpc kpd kpe kpk kpl kpp l-p lcc lcd lce lck lcl lcp ldc ldd lde ldk ldl ldp lec led lee lek lel lep lkl lkp llc lld lle llk lll llp lpc lpd lpe lpk lpl lpp p-p pcc pcd pce pck pcl pcp pdc pdd pde pdk pdl pdp pec ped pee pek pel pep pkc pkd pke pkl pkp plc pld ple plk pll plp ppc ppd ppe ppk ppl ppp