c-- ccc cce ccl ccn cct ce- cec cee cel cen cet cl- clc cle cll cln clt cn- cnc cne cnl cnn cnt ctc cte ctl ctn ctt ec- ecc ece ecl ecn ect eec eee eel een eet elc ele ell eln elt en- enc ene enl enn ent etc ete etl etn ett lcc lce lcl lcn lct lec lee lel len let llc lle lll lln llt lnc lne lnl lnn lnt ltc lte ltl ltt ncc nce ncl ncn nct ne- nec nee nel nen net nlc nle nll nln nlt nnc nne nnl nnn nnt ntc nte ntn ntt tcc tce tcl tcn tct te- tec tee tel ten tet tlc tle tll tln tlt tnc tne tnl tnn tnt ttc tte ttl ttn ttt