def extract_unique(test_dict):
  
  res = list(sorted({ele for val in test_dict.values() for ele in val}))
  return 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