Micro has made a breakthrough. He made a function which he proudly calls Micro's Array Fucntion. It takes an array of integers A and an integer K as input and optimally finds out the number of unordered pairs $(i, j), i \neq j$ such that $|A[i]-A[j]| \ge K$.
Micro is getting a lot of recognition because of it. His best friend Mike wants to be a part of it, but for that he needs to make some contribution. He thought of extending Micro's Array function. He wants to make a new function $g(A,K)$ that also takes an array of integers A and an integer K as input and optimally calculates $\sum{f(X, K)}$ for all contiguous subarrays X of A. He need your help in this and help here means do the entire task. He'll give you an integer K and an array A having N integers and you need to compute $g(A,K)$.

Input:
First line consists of a single integers T denoting the number of test cases.
First line of each test case consists of two space separated integer denoting N and K.
Second line of each test case consists of a N space separated integers denoting the array A.

Output:
For each test case, print the value of $g(A,K)$ in a new line.

Constraints:
$1 \le T \le 5$
$1 \le N \le 10^5$
$1 \le A[i], K \le 10^9$