\begin{tikzpicture}[inner sep=2mm, scale=.4, baseline]
	\draw (-1,-6) .. controls ++(0,4) and ++(0,-4) .. (-5,0);	
	\draw (-.6,-5.8) .. controls ++(0,4) and ++(0,-4) .. (-4.6,.2);
	\draw (-.2,-5.6) .. controls ++(0,4) and ++(0,-4) .. (-4.2,.4);

	\draw (1,-6) .. controls ++(0,4) and ++(0,-4) .. (5,0);	
	\draw (.6,-5.8) .. controls ++(0,4) and ++(0,-4) .. (4.6,0.2);
	\draw (.2,-5.6) .. controls ++(0,4) and ++(0,-4) .. (4.2,0.4);
	
	\draw (-3.8,0) .. controls ++(0,-3.6) and ++(0,-3.6) .. (3.8,0);
	\draw (-3.4,0) .. controls ++(0,-3.2) and ++(0,-3.2) .. (3.4,0);
	\draw (-3,0) .. controls ++(0,-2.8) and ++(0,-2.8) .. (3,0);

	\draw (-1,6) .. controls ++(0,-4) and ++(0,4) .. (-5,-0);	
	\draw (-.6,5.8) .. controls ++(0,-4) and ++(0,4) .. (-4.6,-.2);
	\draw (-.2,5.6) .. controls ++(0,-4) and ++(0,4) .. (-4.2,-.4);

	\draw (1,6) .. controls ++(0,-4) and ++(0,4) .. (5,0);	
	\draw (.6,5.8) .. controls ++(0,-4) and ++(0,4) .. (4.6,-0.2);
	\draw (.2,5.6) .. controls ++(0,-4) and ++(0,4) .. (4.2,-0.4);
	
	\draw (-3.8,0) .. controls ++(0,3.6) and ++(0,3.6) .. (3.8,0);
	\draw (-3.4,0) .. controls ++(0,3.2) and ++(0,3.2) .. (3.4,0);
	\draw (-3,0) .. controls ++(0,2.8) and ++(0,2.8) .. (3,0);
	
	\draw (-1,-6)--+(0,-2);
	\draw (-0.6,-6)--+(0,-2);
	\draw (-0.2,-6)--+(0,-2);
	\draw (0.2,-6)--+(0,-2);
	\draw (0.6,-6)--+(0,-2);
	\draw (1,-6)--+(0,-2);

	\draw (-1,6)--+(0,2);
	\draw (-0.6,6)--+(0,2);
	\draw (-0.2,6)--+(0,2);
	\draw (0.2,6)--+(0,2);
	\draw (0.6,6)--+(0,2);
	\draw (1,6)--+(0,2);
		
	\node[rectangle, fill=white, draw] at (0,-6) {$\; \; P \; \;$};
	\node[rectangle, fill=white, draw] at (-4,0) {$\; \; P \; \;$};
	\node[rectangle, fill=white, draw] at (4,0) {$\; \; P \; \;$};
	\node[rectangle, fill=white, draw] at (0,6) {$\; \; P \; \;$};
		
	\draw[thick, orange] (.5,-3.5) -- (2,-4) node[below right] {$6$};
	\draw[thick, orange] (0,-3.2) -- (0,-1.6) node[above] {$6$};
\end{tikzpicture}