#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001

bool solve(){
	int n;
	cin>>n;
	
	vector<vector<int>> t(3);
	rep(i,n){
		char c;
		int v;
		cin>>c>>v;
		
		t[(c%3)].push_back(v);
	}
	rep(i,3)sort(t[i].begin(),t[i].end());
	sort(t.begin(),t.end());
	if(t[1].size()==0)return true;
	if(t[0].size()==0){
		rep(i,t[1].size()){
			if(binary_search(t[2].begin(),t[2].end(),t[1][i]))return true;
		}
		return false;
	}
	
	do{
		set<int> S;
		rep(i,t[0].size()){
			if(binary_search(t[1].begin(),t[1].end(),t[0][i]))S.insert(t[0][i]);
		}
		if(S.size()==0)continue;
		rep(i,t[1].size()){
			if(binary_search(t[2].begin(),t[2].end(),t[1][i])){
				if(S.size()>=2 || t[1].size()==1)return true;
				if((*S.begin())!=t[1][i])return true;
			}
		}
	}
	while(next_permutation(t.begin(),t.end()));
	return false;
}


int main(){
	
	int _t;
	cin>>_t;
	
	rep(_,_t){
		if(solve())cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}
	
	return 0;
}