C312312111111331312111133133313331333133313231333132233132333221   >>    C31231211111133131211113313331333133313331323133313223313233322   <<    C312312111111331312111133133313331333133313231333132233132333223   >>      C312312111111331312111133133313331333133313231333132233132333222   >>