from typing import List


def even_fibb(n: int) -> List[int]:
    """
    Returns a list of the first N even fibbonacci numbers.

    >>> even_fibb(2)
    [2, 8]

    pre: n >= 0
    post: len(__return__) == n
    """
    prev = 1
    cur = 1
    result = []
    while n > 0:
        prev, cur = cur, prev + cur
        if cur % 2 == 0:
            result.append(cur)
            n -= 1
    return result