c-- ccc cce ccl ccp cct ce- cec cee cel cep cet cl- clc cle cll clp clt cpc cpe cpl cpp cpt ctc cte ctl ctp ctt ec- ecc ece ecl ect eec eee eel eep eet elc ele ell elp elt ep- epc epe epl epp ept etc ete etl etp ett l-p lcc lce lcl lcp lct lec lee lel lep let llc lle lll llp llt lpc lpe lpl lpp lpt ltc lte ltl ltp ltt p-p pcc pce pcl pcp pct pec pee pel pep pet plc ple pll plp plt ppc ppe ppl ppp ppt pt- ptc pte ptl ptp ptt tcc tce tcl tcp tct te- tec tee tel tep tet tlc tle tll tlp tlt tpc tpe tpl tpp tpt ttc tte ttl ttp ttt