def get_pairs(word):
    """Returns the set of symbol pairs in a word.

    ``word`` is represented as tuple of symbols (symbols being variable-length
    strings).
    """
    pairs = set()
    prev_char = word[0]
    for char in word[1:]:
        pairs.add((prev_char, char))
        prev_char = char
    return pairs
Returns the set of symbol pairs in a word.

    ``word`` is represented as tuple of symbols (symbols being variable-length
    strings).
    
fiftyone/utils/clip/tokenizer.py