CLASS cer
	CLASS cer$a
		METHOD a sample (Lcen;IIIII)I
			ARG 1 context
			ARG 2 up
			ARG 3 right
			ARG 4 down
			ARG 5 left
			ARG 6 self
	CLASS cer$b
		METHOD a sample (Lcen;IIIII)I
			ARG 1 context
			ARG 2 up
			ARG 3 right
			ARG 4 down
			ARG 5 left
			ARG 6 self