#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rep1(i,n) for(int i = 1; i <= (n); ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
#define srep(i,s,t) for (int i = s; i < (t); ++i)
#define rng(a) a.begin(),a.end()
#define rrng(a) a.rbegin(),a.rend()
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define sz(x) (int)(x).size()
#define pcnt __builtin_popcountll
#define snuke srand((unsigned)clock()+(unsigned)time(NULL));
#define newline puts("")
using namespace std;
template<typename T> using vc = vector<T>;
template<typename T> using vv = vc<vc<T>>;
template<typename T> using PQ = priority_queue<T,vc<T>,greater<T>>;
using uint = unsigned; using ull = unsigned long long;
using vi = vc<int>; using vvi = vv<int>; using vvvi = vv<vi>;
using ll = long long; using vl = vc<ll>; using vvl = vv<ll>; using vvvl = vv<vl>;
using P = pair<int,int>; using vp = vc<P>; using vvp = vv<P>;
int geti(){int x;scanf("%d",&x);return x;}
vi pm(int n, int s=0) { vi a(n); iota(rng(a),s); return a;}
template<typename T>istream& operator>>(istream&i,vc<T>&v){rep(j,sz(v))i>>v[j];return i;}
template<typename T>string join(const T&v,const string& d=""){stringstream s;rep(i,sz(v))(i?s<<d:s)<<v[i];return s.str();}
template<typename T>ostream& operator<<(ostream&o,const vc<T>&v){if(sz(v))o<<join(v," ");return o;}
template<typename T1,typename T2>istream& operator>>(istream&i,pair<T1,T2>&v){return i>>v.fi>>v.se;}
template<typename T1,typename T2>ostream& operator<<(ostream&o,const pair<T1,T2>&v){return o<<v.fi<<","<<v.se;}
template<typename T1,typename T2>void operator--(pair<T1,T2>&a,int){a.fi--;a.se--;}
template<typename T>void operator--(vc<T>&a,int){for(T&x:a)x--;}
template<typename T>void operator++(vc<T>&a,int){for(T&x:a)x++;}
template<typename T>void operator+=(vc<T>&a,T b){for(T&x:a)x+=b;}
template<typename T>void operator+=(vc<T>&a,const vc<T>&b){a.insert(a.end(),rng(b));}
template<typename T1,typename T2>bool mins(T1& x,const T2&y){if(x>y){x=y;return true;}else return false;}
template<typename T1,typename T2>bool maxs(T1& x,const T2&y){if(x<y){x=y;return true;}else return false;}
template<typename Tx, typename Ty>Tx dup(Tx x, Ty y){return (x+y-1)/y;}
template<typename T>ll suma(const vc<T>&a){ll res(0);for(auto&&x:a)res+=x;return res;}
template<typename T>ll suma(const vv<T>&a){ll res(0);for(auto&&x:a)res+=suma(x);return res;}
template<typename T>void uni(T& a){sort(rng(a));a.erase(unique(rng(a)),a.end());}
template<typename T>void prepend(vc<T>&a,const T&x){a.insert(a.begin(),x);}
const double eps = 1e-10;
const ll LINF = 1001002003004005006ll;
const int INF = 1001001001;
#define dame { puts("-1"); return;}
#define yes { puts("YES"); return;}
#define no { puts("NO"); return;}
#define ret(x) { cout<<(x)<<endl; return;}
#define yn {puts("Yes");}else{puts("No");}
const int MX = 200005;
template<typename T>void rot(T& a,int i){rotate(a.begin(),a.begin()+(i),a.end());}
template<typename T>void rot(vv<T>& a){int h=sz(a),w=sz(a[0]);vv<T> p(w,vc<T>(h));swap(a,p);rep(i,h)rep(j,w)a[j][h-1-i]=p[i][j];}
void rot(vc<string>& a){int h=sz(a),w=sz(a[0]);vc<string> p(w,string(h,'?'));swap(a,p);rep(i,h)rep(j,w)a[j][h-1-i]=p[i][j];}

struct Solver {
  void solve() {
    int n;
    scanf("%d",&n);
    vvi a(3);
    rep(i,n) {
      char c;
      int d;
      scanf(" %c%d",&c,&d);
      int x = 0;
      if (c == 'R') x = 1;
      if (c == 'G') x = 2;
      --d;
      a[x].pb(d);
    }
    while (1) {
      bool upd = false;
      rep(i,sz(a)) {
        if (sz(a[i]) == 0) {
          a.erase(a.begin()+i);
          upd = true;
          break;
        }
      }
      if (!upd) break;
    }
    if (sz(a) == 1) yes;
    auto f = [&](int i, int j) {
      vi& b = a[i];
      vi& c = a[j];
      set<int> st;
      for (int x : b) st.insert(x);
      vi res;
      for (int x : c) {
        if (st.count(x)) res.pb(x);
      }
      return res;
    };

    if (sz(a) == 2) {
      if (f(0,1).size()) yes;
      no;
    }

    rep(ri,3) {
      vi l = f(0,1);
      vi r = f(1,2);
      if (sz(l) && sz(r)) {
        if (sz(l) > 1 || sz(r) > 1 || l != r) yes;
        if (sz(a[1]) == 1) yes;
      }
      rot(a,1);
    }
    no;
  }
};

int main() {
  // cin.tie(nullptr); ios::sync_with_stdio(false);
  int ts = 1;
  scanf("%d",&ts);
  rep1(ti,ts) {
    Solver solver;
    solver.solve();
  }
  return 0;
}