The DNA sequence is composed of a series of nucleotides abbreviated as `'A'`, `'C'`, `'G'`, and `'T'`.

- For example, `"ACGAATTCCG"` is a DNA sequence.

When studying DNA, it is useful to identify repeated sequences within the DNA.

Given a string `s` that represents a DNA sequence, return all the `10`-letter-long sequences (substrings) that occur more than once in a DNA molecule. You may return the answer in any order.

Example 1:

    Input: s = "AAAAACCCCCAAAAACCCCCCAAAAAGGGTTT"
    Output: ["AAAAACCCCC","CCCCCAAAAA"]

Example 2:

    Input: s = "AAAAAAAAAAAAA"
    Output: ["AAAAAAAAAA"]

Constraints:

- `1 <= s.length <= 105`
- `s[i]` is either `'A'`, `'C'`, `'G'`, or `'T'`.