\begin{comment}
\fill (canvas cs:x=1cm,y=1.5cm) circle (2pt);
\fill (canvas cs:x=2cm,y=-5mm+2pt) circle (2pt);
\fill[color=red] (1.5,0.5) circle (1ex);
\fill[color=red!50] (0.5,0.5) circle (1.5ex);
\fill[color=blue!50] (2.5,2.5) circle (2ex);

\fill[color=red] (1.5,0.5) circle (1.5ex);
\fill[color=red] (0.5,0.5) circle (1.5ex);
\fill[color=blue] (1.5,1.5) circle (1.5ex);

\draw (0.5,0.5) -- (1.5,0.5) -- (1.5,1.5);
\end{comment}

\draw (7,1) circle (1ex);
\draw (7,0.9) node[below]{4-4-2-2};
\draw (5.5,2) circle (1ex);
\draw (5.6,2) node[right]{5-5-3-1};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,2) -- (7,1);
\draw (4,1) circle (1ex); % node[below]{4-4-4-0};
\draw (4,0.9) node[below]{4-4-4-0};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,2) -- (4,1);
\draw (8.5,2) circle (1ex);
\draw (8.6,2) node[right]{5-3-3-3};
\draw[shorten >=1ex,shorten <=1ex,-] (7,1) -- (8.5,2);
\draw (5.5,4) circle (1ex);
\draw (5.6,4) node[right]{6-4-2-0};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,2) -- (5.5,4);
\draw (8.5,4) circle (1ex);
\draw (8.6,4) node[right]{6-2-2-2};
\draw[shorten >=1ex,shorten <=1ex,-] (8.5,2) -- (8.5,4);
\draw (7,5) circle (1ex);
\draw (7.1,5) node[right]{7-3-3-1};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,4) -- (7,5);
\draw (7,7) circle (1ex);
\draw (7.1,7) node[right]{8-2-2-0};
\draw[shorten >=1ex,shorten <=1ex,-] (7,7) -- (7,5);
\draw[shorten >=1ex,shorten <=1ex,-] (7,5) -- (8.5,4);
\draw (5.5,8) circle (1ex);
\draw (5.6,8) node[right]{9-3-1-1};
\draw[shorten >=1ex,shorten <=1ex,-] (7,7) -- (5.5,8);
\draw[shorten >=1ex,shorten <=1ex,-] (4,7) -- (5.5,8);
\draw (5.5,10) circle (1ex);
\draw (5.6,10) node[right]{10-2-0-0};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,10) -- (5.5,8);
\draw (4,11) circle (1ex);
\draw (4.1,11) node[right]{11-1-1-1};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,10) -- (4,11);
\draw (2.5,10) circle (1ex);
\draw (2.4,10) node[below]{12-0-0-0};
\draw[shorten >=1ex,shorten <=1ex,-] (4,11) -- (2.5,10);

\draw (4,5) circle (1ex);
\draw (4.1,5) node[right]{7-5-1-1};
\draw[shorten >=1ex,shorten <=1ex,-] (5.5,4) -- (4,5);
\draw (4,7) circle (1ex);
\draw (4.1,7) node[right]{8-4-0-0};
\draw[shorten >=1ex,shorten <=1ex,-] (4,7) -- (4,5);
\draw (2.5,4) circle (1ex);
\draw (2.6,4) node[right]{6-6-0-0};
\draw[shorten >=1ex,shorten <=1ex,-] (4,5) -- (2.5,4);
