# Four boolean functions need your comments to explain to potential
# users what they say about list L1's relationship to L2.

def q1(L1, L2) :
    """Return whether ...

    """
    for x in L1 :
        if x in L2 : return False
    return True

def q2(L1, L2) :
    """Return whether ...

    """
    for x in L1 :
        if not x in L2 : return False
    return True

def q3(L1, L2) :
    """Return whether ...

    """
    for x in L1 :
        if not x in L2 : return True
    return False

def q4(L1, L2) :
    """Return whether ...

    """
    for x in L1 :
        if x in L2 : return True
    return False