def not_null_field(arr):
    for i in range(36):
        if arr[i] == 'X':
            return False
        else:
            return True

99dc07fb24195078fb5c79b833b0fc6bbbc84523
<mask token>

def not_null_field(arr):
    for i in range(36):
        if arr[i] == 'X':
            return False
        else:
            return True
