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Given two numbers, find the GCD of those 2 numbers.

**Input:**

The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains two space separated integers a and b.

**Output:**

Print the GCD of the two numbers.

**Constraints:**

1 <= T <= 100

1 <= a , b <= 1000

**Example:
Input:**

98 56

48 18

14

6