#include<bits/stdc++.h>
using namespace std;

#define Dv(v) for (auto x : v) cerr << x << ' '; cerr << endl;
#define D(x) cerr << #x << " = " << x << ", "

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;

const int K = 100;


struct BigInt {
    vi bits;
    BigInt() {
        bits = vi(K+2);
    }

    void add(int bt) {
        for (int i=bt; i <= K+1; ++i) {
            if (bits[i]) {
                bits[i] = 0;
            }
            else {
                bits[i] = 1;
                break;
            }
        }
    }

    bool eq3() {
        if (!bits[K] || !bits[K+1]) {
            return false;
        }
        for (int i=0; i < K; ++i) {
            if (bits[i]) return false;
        }
        return true;
    }

    bool gt3() {
         if (!bits[K] || !bits[K+1]) {
            return false;
        }
        for (int i=0; i < K; ++i) {
            if (bits[i]) return true;
        }
        return false;
    }
    

};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int T;
    cin >> T;
    while(T--) {
        BigInt b;
        int n;
        cin >> n;
        bool eps = false;
        for (int i=0; i < n; ++i) {
            int x, y;
            cin >> x >> y;
            int pt = (x+y);
            if (pt > K) {
                eps = true;
            }
            else {
                b.add(K-pt);
                if (b.gt3()) break;
            }
        }
        bool good = (!b.gt3() && (!eps || !b.eq3()));
        cout << (good ? "YES\n" : "NO\n");
    }
}