C111123313121111121111331333133313113313232123313331311331313331323233211331   >>    C11112331312111112111133133313331311331323212331333131133131333132323321133   <<    C111123313121111121111331333133313113313232123313331311331313331323233211333   >>      C111123313121111121111331333133313113313232123313331311331313331323233211332   >>