def move_consonant_right(letters: List[str], positions: List[int]) -> List[str]:
    """
    Given a list of letters, and a list of consonant positions, move the consonant positions to
    the right, merging strings as necessary.

    :param letters:
    :param positions:
    :return:

    >>> move_consonant_right(list("abbra"), [ 2, 3])
    ['a', 'b', '', '', 'bra']
    """
    for pos in positions:
        letters[pos + 1] = letters[pos] + letters[pos + 1]
        letters[pos] = ""
    return letters
Given a list of letters, and a list of consonant positions, move the consonant positions to
    the right, merging strings as necessary.

    :param letters:
    :param positions:
    :return:

    >>> move_consonant_right(list("abbra"), [ 2, 3])
    ['a', 'b', '', '', 'bra']