& w & w & w & w \cdots \\
  w & r & w & r & w & r & w & w & b & w & b & w & b & w & b & w \cdots \\
  r & w & r & w & r & w & r & w & w & b & w & b & w & b & w & w \cdots \\
  w & r & w & r & w & r & w & w & b & w & b & w & b & w & b & w \cdots \\
  w & w & w & w & w & w & w & w & w & w & w & w & w & w & w & w \cdots \\
  \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots & \vdots ~ \ddots
\end{array}\right)$$

For $\Omega = [-30, 30]\times [-60, 60]$, the associated water pattern $B$ can be described by the elementary $32 \times 66$ discrete pattern $K$ 