C1111133313331323223313331333133313331333132333133313113313231311   >>    C111113331333132322331333133313331333133313233313331311331323131   <<    C1111133313331323223313331333133313331333132333133313113313231313   >>      C1111133313331323223313331333133313331333132333133313113313231312   >>