#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using pii = pair<int, int>;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define repr(i, n) for (int i = (int)(n - 1); i >= 0; --i)

bool query() {
    int n;
    cin >> n;
    vi cnt(3);
    vector c(3, vector<bool>(n, false));
    rep(i, n) {
        char ch;
        int x;
        cin >> ch >> x, x--;
        c[ch % 3][x] = true;
        cnt[ch % 3]++;
    }
    int con01 = 0, con02 = 0, con12 = 0, con012 = 0;
    rep(i, n) {
        if (c[0][i] && c[1][i] && c[2][i]) {
            con012 += 1;
        } else {
            if (c[0][i] && c[1][i]) con01 |= 1;
            if (c[0][i] && c[2][i]) con02 |= 1;
            if (c[1][i] && c[2][i]) con12 |= 1;
        }
        if (con01 + con02 + con12 + con012 >= 2) return true;
    }
    if (con01 > 0) return cnt[2] == 0;
    if (con02 > 0) return cnt[1] == 0;
    if (con12 > 0) return cnt[0] == 0;
    if (con012 > 0) {
        if (cnt[0] == 1) return true;
        if (cnt[1] == 1) return true;
        if (cnt[2] == 1) return true;
    }
    int nz = 0;
    rep(i, 3) {
        if (cnt[i] > 0) nz++;
    }
    return nz == 1;
}
int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int t;
    cin >> t;
    while (t--) {
        cout << (query() ? "YES" : "NO") << '\n';
    }
    return 0;
}