def has246(nums):
    """docstring"""
    result = []
    for index in range(len(nums)):
        if num == 2 and nums[index + 1] == 4 and nums[index + 2] == 6:
            return True
        else:
            return False
#test cases
print(has246([2, 2, 4, 6, 2]))
print(has246([2, 2, 4, 8, 2]))
print(has246([2, 4]))