c-- ccc ccd cce ccl ccm cct cdc cdd cde cdl cdm cdt ce- cec ced cee cel cem cet cl- clc cld cle cll clm clt cmc cmd cme cml cmm cmt ctc ctd cte ctl ctm ctt dcc dcd dce dcl dcm dct ddc ddd dde ddl ddm ddt de- dec ded dee del dem det dl- dlc dld dle dll dlm dlt dmc dmd dme dml dmm dmt dtc dtd dte dtl dtm dtt ec- ecc ecd ece ecl ecm ect ed- edc edd ede edl edm edt eec eed eee eel eem eet elc eld ele ell elm elt em- emc emd eme eml emm emt etc etd ete etl etm ett lcc lcd lce lcl lcm lct ldc ldd lde ldl ldm ldt lec led lee lel lem let llc lld lle lll llm llt lmc lmd lme lml lmm lmt ltc ltd lte ltl ltm ltt mc- mcc mcd mce mcl mcm mct mdc mdd mde mdl mdm mdt mec med mee mel mem met mlc mld mle mll mlm mlt mmc mmd mme mml mmm mmt mtc mtd mte mtl mtm mtt tcc tcd tce tcl tcm tct tdc tdd tde tdl tdm tdt te- tec ted tee tel tem tet tlc tld tle tll tlm tlt tmc tmd tme tml tmm tmt ttc ttd tte ttl ttm ttt