Given an array arr of positive integers of size N. Reverse every sub-array of K group elements.
The first line of input contains a single integer T denoting the number of test cases. Then T test cases follow. Each test case consist of two lines of input. The first line of each test case consists of an integer N(size of array) and an integer K separated by a space. The second line of each test case contains N space separated integers denoting the array elements.
For each test case, print the modified array.
1 ≤ T ≤ 200
1 ≤ N, K ≤ 107
1 ≤ A[i] ≤ 1018