Question: 
Write a function to find the combinations of sums with tuples in the given tuple list.


Model's Code:
def find_combinations(tuples_list):
    combinations = []
    for i in range(len(tuples_list)):
        for j in range(len(tuples_list)):
            if i != j:
                sum_tuple = (tuples_list[i][0] + tuples_list[j][0], tuples_list[i][1] + tuples_list[j][1])
                combinations.append(sum_tuple)
    return list(set(combinations))



Sample Correct Code:
from itertools import combinations 
def find_combinations(test_list):
  res = [(b1 + a1, b2 + a2) for (a1, a2), (b1, b2) in combinations(test_list, 2)]
  return (res) 


Asserts:
assert find_combinations([(2, 4), (6, 7), (5, 1), (6, 10)]) == [(8, 11), (7, 5), (8, 14), (11, 8), (12, 17), (11, 11)]
assert find_combinations([(3, 5), (7, 8), (6, 2), (7, 11)]) == [(10, 13), (9, 7), (10, 16), (13, 10), (14, 19), (13, 13)]
assert find_combinations([(4, 6), (8, 9), (7, 3), (8, 12)]) == [(12, 15), (11, 9), (12, 18), (15, 12), (16, 21), (15, 15)]


Tests:
Test 1 of 3: FAIL: AssertionError()

Test 780 of 974: 589/780 (75.51282051282051%): failed