import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws IOException, ClassNotFoundException {
        // Scanner sc = new Scanner(new File("ONLINE.in"));
        Scanner sc = new Scanner(System.in);
        int t = sc.nextInt();
        while(t-->0){
            int n = sc.nextInt();
            int[] a = new int[n];
            int[] ans = new int[n];
            for(int i=0;i<n;i++) a[i]=sc.nextInt();
            Stack<Integer> st = new Stack<>();
            for(int i=n-1;i>=0;i--){
                if(st.empty()){
                    ans[i]=-1;
                    st.push(a[i]);
                }else{
                    while(!st.empty() && st.lastElement()<=a[i]) st.pop();
                    if(st.empty()) ans[i] = -1;
                    else ans[i] = st.lastElement();
                    st.push(a[i]);
                }
            }
            for(int i=0;i<n;i++) System.out.printf("%d ",ans[i]);
            System.out.println();
        }
    }
}