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
for t in range(input()):
 n,r=map(long,raw_input().split())
 if n>=r:
  if (r & n-r):
   print "even"
  else:
   print "odd"
 else:  
  print "odd"