#!/bin/python3

import math
import os
import random
import re
import sys

# Complete the solve function below.


if __name__ == '__main__':
    

    t = int(input().strip())

    for t_itr in range(t):
        n = int(input().strip())

        board = []

        for _ in range(n):
            board.append(list(map(int, input().rstrip().split())))
    
        for x in range(len(board)-1):
            if board[x]==board[x+1]:
                print("No")
            else:
                print ("Yes")