c-- ccc ccd ccl ccm ccx cdc cdd cdl cdm cdx cl- clc cld cll clm clx cmc cmd cml cmm cmx cxc cxl cxx dcc dcd dcl dcm dcx ddc ddd ddl ddm ddx dl- dlc dld dll dlm dlx dmc dmd dml dmm dmx dxc dxd dxl dxx lcc lcd lcl lcm lcx ldc ldd ldl ldm llc lld lll llm lmc lmd lml lmm lxc lxd lxx mc- mcc mcd mcl mcm mcx mdc mdd mdl mdm mdx mlc mld mll mlm mlx mmc mmd mml mmm mmx mxc mxd mxl xcd xcl xcx xdc xdm xld xlm xmc xmd xml xmm xmx xxl xxx