c-- ccc ccd cce ccl cct cdc cdd cde cdl cdt ce- cec ced cee cel cet cl- clc cld cle cll clt ctc ctd cte ctl ctt dcc dcd dce dcl dct ddc ddd dde ddl ddt de- dec ded dee del det dl- dlc dld dle dll dlt dtc dtd dte dtl dtt ec- ecc ecd ece ecl ect ed- edc edd ede edl edt eec eed eee eel eet elc eld ele ell elt etc etd ete etl ett lcc lcd lce lcl lct ldc ldd lde ldl ldt lec led lee lel let llc lld lle lll llt ltc ltd lte ltl ltt tcc tcd tce tcl tct tdc tdd tde tdl tdt te- tec ted tee tel tet tlc tld tle tll tlt ttc ttd tte ttl ttt