Data:L9a17/PD Presentation

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle X(2,5,3,6) X(4,14,1,13) X(6,1,7,2) X(8,18,9,17) X(10,16,11,15) X(12,4,13,3) X(14,12,15,11) X(16,8,17,7) X(18,10,5,9)}