User:Nils Grimsmo/LCS3

				A		A		C		C
			$0\,$		$0\,$		$0\,$		$0\,$		$0\,$
A				$\nwarrow \,$		$\nwarrow \,$
			$0\,$		$1\,$		$1\,$	$\leftarrow \,$	$1\,$	$\leftarrow \,$	$1\,$
C					$\uparrow \,$		$\uparrow \,$	$\nwarrow \,$		$\nwarrow \,$
			$0\,$		$1\,$	$\leftarrow \,$	$1\,$		$2\,$		$2\,$
A				$\nwarrow \,$		$\nwarrow \,$			$\uparrow \,$		$\uparrow \,$
			$0\,$		$1\,$		$2\,$	$\leftarrow \,$	$2\,$	$\leftarrow \,$	$2\,$
C					$\uparrow \,$		$\uparrow \,$	$\nwarrow \,$		$\nwarrow \,$
			$0\,$		$1\,$		$2\,$		$3\,$		$3\,$