C1111133313331323223313331333133313113313121111113313112211231132311   >>    C111113331333132322331333133313331311331312111111331311221123113231   <<    C1111133313331323223313331333133313113313121111113313112211231132313   >>      C1111133313331323223313331333133313113313121111113313112211231132312   >>