def trim_tuple(test_list, K):
  
  res = []
  for ele in test_list:
    N = len(ele)
    res.append(tuple(list(ele)[K: N - K]))
  return (str(res)) 
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