# Base layer
·····c····
·····c····
··ccccc···
·ccccccc··
cc··cccccc
·c··c·····
·ccccc····
·cccccc···
···cccc···
···c··c···

# Logic layer
·····│····
·····↑····
··│█←┤█···
·█◀←┬▲▲┐··
──··├┴┴┴←─
·█··↑·····
·▲─←┤█····
·█←┬▲▲┐···
···├┴┴┤···
···│··│···