def swap_element(list1, list2, index):
    """
    Swaps element between list1 and list2 at given index
    
    Parameters:
    list1 -- First list
    list2 -- Second list
    index -- Index the swap operation will be applied
    
    Returns:
    list1 -- First list with swapped element
    list2 -- Second list with swapped element
    """
    temp = list1[index]
    list1[index] = list2[index]
    list2[index] = temp
    return list1, list2