$$
\begin{array}{c}
  \begin{array}{c:c}
    \begin{array}{c|cclc}
      \text{min} & 0 & 1 & 2 & 3\\
      \hline
      0 & 0 & 0 & 0 & 0\\
      1 & 0 & 1 & 1 & 1\\
      2 & 0 & 1 & 2 & 2\\
      3 & 0 & 1 & 2 & 3
    \end{array}
  &
    \begin{array}{c|cccl}
      \text{max}&0&1&2&3\\
      \hline
      0 & 0 & 1 & 2 & 3\\
      1 & 1 & 1 & 2 & 3\\
      2 & 2 & 2 & 2 & 3\\
      3 & 3 & 3 & 3 & 3
    \end{array}
  \end{array}
\\
  \begin{array}{l|cccc}
    \Delta&0&1&2&3\\
    \hline
    0 & 0 & 1 & 2 & 3\\
    1 & 1 & 0 & 1 & 2\\
    2 & 2 & 1 & 0 & 1\\
    3 & 3 & 2 & 1 & 0
  \end{array}
\end{array}
$$
