#include <bits/stdc++.h>

using namespace std;

#define ar array
#define ll long long

const int MAX_N = 1e5 + 1;
const int m = 1e9 + 7;
const int INF = 1e9;
const ll LINF = 1e18;

int main()
{
	int t=1;
	cin>>t;
	int n;
	while(t--)
	{
		cin>>n;
		int A[n];
		for(int i=0;i<n;i++)cin>>A[i];
		int x=0,y=n-1;
		while(x<=y){
			cout<<A[x]<<" ";
			if(x!=y)cout<<A[y--]<<" ";
			x++;
		}
		cout<<endl;
	}

return 0;
}