#include <bits/stdc++.h>

using namespace std;

typedef long long int big;






int main(){
//  freopen("i.txt","r",stdin);
//  freopen("o.txt","w",stdout);


    big t=1;
    cin>>t;
    while(t--){
        big n;
        cin>>n;
        vector<big> arr(n);
        for(big i=0;i<n;i++){
            cin>>arr[i];
        }
        vector<big> pref(n);
        pref[0]=arr[0];
        for(big i=1;i<n;i++){
            pref[i]=arr[i]^pref[i-1];
        }
    //  dbr("pref",pref);
        big result=0;
        map<big,pair<big,big>> mp;
        mp[0]={1,0};
        for(big i=0;i<n;i++){
            big count=mp[pref[i]].first;
            big sum=mp[pref[i]].second;
            result=result+(count*(i+1)-sum-count);
            mp[pref[i]].first++;
            mp[pref[i]].second=mp[pref[i]].second+(i+1);
        }
        cout<<result<<endl;
    }
    return 0;
}