c-- ccc ccd cce ccl cct ccu cdc cdd cde cdl cdt cdu ce- cec ced cee cel cet ceu cl- clc cld cle cll clt clu ctc ctd cte ctl ctt ctu cuc cud cue cul cut cuu dcc dcd dce dcl dct dcu ddc ddd dde ddl ddt ddu de- dec ded dee del det deu dl- dlc dld dle dll dlt dlu dtc dtd dte dtl dtt dtu duc dud due dul dut ec- ecc ecd ece ecl ect ecu ed- edc edd ede edl edt edu eec eed eee eel eet elc eld ele ell elt elu etc etd ete etl ett etu eu- euc eud eue eul eut lcc lcd lce lcl lct lcu ldc ldd lde ldl ldt ldu lec led lee lel let leu llc lld lle lll llt llu ltc ltd lte ltl ltt ltu luc lud lue lul lut luu tcc tcd tce tcl tct tcu tdc tdd tde tdl tdt tdu te- tec ted tee tel tet teu tlc tld tle tll tlt tlu ttc ttd tte ttl ttt ttu tuc tud tue tul tut tuu ucc ucd uce ucl uct ucu udc udd ude udl udt udu uec ued uee uel uet ulc uld ule ull ult ulu utc utd ute utl utt utu uuc uue uut uuu