C11111333133313232233133313331333133313331313331333133313231333133313123231331   >>    C1111133313331323223313331333133313331333131333133313331323133313331312323133   <<    C11111333133313232233133313331333133313331313331333133313231333133313123231333   >>      C11111333133313232233133313331333133313331313331333133313231333133313123231332   >>