[ 0 1 2 0 1 2 1 2 0 1 2 0 0 1 2 0 1 2 1 2 0 1 2 0 ] {\displaystyle {\begin{bmatrix}0&{1 \over 2}&0&{1 \over 2}\\{1 \over 2}&0&{1 \over 2}&0\\0&{1 \over 2}&0&{1 \over 2}\\{1 \over 2}&0&{1 \over 2}&0\end{bmatrix}}}
