C11111333133313232233133313331333133313331312111113231333131111211   >>    C1111133313331323223313331333133313331333131211111323133313111121   <<    C11111333133313232233133313331333133313331312111113231333131111213   >>      C11111333133313232233133313331333133313331312111113231333131111212   >>