C1111233133313231133133313231333133313113313113313233313232233132312311   >>    C111123313331323113313331323133313331311331311331323331323223313231231   <<    C1111233133313231133133313231333133313113313113313233313232233132312313   >>      C1111233133313231133133313231333133313113313113313233313232233132312312   >>