Solve the programming task below in a Python markdown code block.
"I have only one rule, never submit partially correct code" -Barney Stinson

The religious act which Barney and his friends hold most sacred, XORING the natural numbers in the given range. This time Barney is a bit busy with picking up some girls, so he asked you to help him. He gave you two numbers $L$ and $R$, you have to find if XOR of all the numbers in range L to R (L,R both inclusive) is odd or even.

Warning!! Large Input-Output. Please use Fast IO.

------ Input: ------

The first line will contain $T$, number of testcases. 
Each testcase contains a single line of input, two integers $L, R$. 

------ Output: ------
For each testcase, in the new line print "Odd" if the XOR in the range is odd, else print "Even".

------ Constraints  ------
$1 ≤ T ≤ 10^{6}$
$1 ≤ L ≤  R ≤ 10$^{$18$}

----- Sample Input 1 ------ 
4
1 4
2 6
3 3
2 3
----- Sample Output 1 ------ 
Even
Even
Odd
Odd
----- explanation 1 ------ 
Test case -1 -> XOR (1,2,3,4) =4

Test case -2 -> XOR (2,3,4,5,6) =6

Test case -3 -> XOR (3) =3

Test case -4 -> XOR (2,3) =1