Hermione is very good in Magic but she is not good enough in Mathematics. She got stuck in a problem of mathematics in which she has to find out whether a combination M objects out of N is even or odd.
Harry is quite good in mathematics so Hermione goes to get the help from Harry.

Input:

You have T number of test cases where each test case have N and M number of objects.

Output:

print whether combination of M objects out of N is "even" or "odd".

Constraints:

1 ≤ T ≤ 100000

0 ≤ M ≤ N<100000000

SAMPLE INPUT
2
10 5
4 2

SAMPLE OUTPUT
even
even

见题面

见题面