def pair_wise(l1):
    
    temp = []
    for i in range(len(l1) - 1):
        current_element, next_element = l1[i], l1[i + 1]
        x = (current_element, next_element)
        temp.append(x)
    return temp
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result