human
A sequence of n integers is called a permutation if it contains all integers from 1 to n exactly once.

Given two integers n and k, construct a permutation a of numbers from 1 to n which has exactly k peaks. An index i of an array a of size n is said to be a peak if 1 < i < n and a_i \gt a_{i-1} and a_i \gt a_{i+1}. If such permutation is not possible, then print -1.

Input

The first line contains an integer t (1 ≤ t ≤ 100) — the number of test cases.

Then t lines follow, each containing two space-separated integers n (1 ≤ n ≤ 100) and k (0 ≤ k ≤ n) — the length of an array and the required number of peaks.

Output

Output t lines. For each test case, if there is no permutation with given length and number of peaks, then print -1. Otherwise print a line containing n space-separated integers which forms a permutation of numbers from 1 to n and contains exactly k peaks. 

If there are multiple answers, print any.

Example

Input

5
1 0
5 2
6 6
2 1
6 1

Output

1 
2 4 1 5 3 
-1
-1
1 3 6 5 4 2

Note

In the second test case of the example, we have array a = [2,4,1,5,3]. Here, indices i=2 and i=4 are the peaks of the array. This is because (a_{2} \gt a_{1} , a_{2} \gt a_{3}) and (a_{4} \gt a_{3}, a_{4} \gt a_{5}). 
Using python3 can you solve the prior task?
assistant
#Here is Python code to print -1.

#------------------Important Modules------------------#
from sys import stdin,stdout
from bisect import bisect_left as bl
from bisect import bisect_right as br
from heapq import *
from random import *
input=stdin.readline
prin=stdout.write
from random import sample
from collections import Counter,deque
from fractions import *
from math import sqrt,ceil,log2,gcd,cos,pi
#dist=[0]*(n+1)
mod=10**9+7
"""
class DisjSet: 
    def __init__(self, n): 
        
        self.rank = [1] * n 
        self.parent = [i for i in range(n)] 
    def find(self, x): 
        if (self.parent[x] != x): 
              
             

            self.parent[x] = self.find(self.parent[x]) 
              
            
        return self.parent[x] 
  
  
    
    def union(self, x, y): 
          
         
        xset = self.find(x) 
        yset = self.find(y) 
  
        if xset == yset: 
            return
  
        if self.rank[xset] < self.rank[yset]: 
            self.parent[xset] = yset 
  
        elif self.rank[xset] > self.rank[yset]: 
            self.parent[yset] = xset 
  
        else: 
            self.parent[yset] = xset 
            self.rank[xset] = self.rank[xset] + 1
  

"""

def f(arr,i,j,d,dist):
    if i==j:
        return 
    nn=max(arr[i:j])
    for tl in range(i,j):
        if arr[tl]==nn:
            dist[tl]=d
            #print(tl,dist[tl])
            f(arr,i,tl,d+1,dist)
            f(arr,tl+1,j,d+1,dist)
    #return dist
            
        
def ps(n):
    cp=0;lk=0;arr={}
    #print(n)
    #cc=0;
    while n%2==0:
        n=n//2
        #arr.append(n);arr.append(2**(lk+1))
        lk+=1
    
    
    
        
    for ps in range(3,ceil(sqrt(n))+1,2):
        lk=0
        cc=0
        while n%ps==0:
            n=n//ps
            #cc=1
            #arr.append(n);arr.append(ps**(lk+1))
            lk+=1
        
            
            
    if n!=1:
        #lk+=1
        #arr[n]=1
        #ans*=n;
        lk+=1
        return False
        #return arr
    
    #print(arr)
    
    return...