// Java solution for problem H
// Author: Grzegorz Guspiel

import java.io.*;
import java.util.*;

class IntReader {
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer tokenizer = new StringTokenizer("");

    int next() throws IOException {
        while (!tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(reader.readLine());
        }
        return Integer.parseInt(tokenizer.nextToken());
    }
}

public class h {
final int INF = 1000100000;

class Range {
    int a, b;

    Range(int a, int b) {
        this.a = a;
        this.b = b;
    }
}

Range rangeSumNeutral() {
    return new Range(INF, -INF);
}

Range rangeProductNeutral() {
    return new Range(-INF, INF);
}

void sum(Range r1, Range r2) {
    r1.a = Math.min(r1.a, r2.a);
    r1.b = Math.max(r1.b, r2.b);
}

void product(Range r1, Range r2) {
    r1.a = Math.max(r1.a, r2.a);
    r1.b = Math.min(r1.b, r2.b);
}

boolean contains(Range r1, Range r2) {
    String prefix = "contains " + r1 + " vs " + r2;
    if (r1.a <= r2.a && r1.b >= r2.b) {
        return true;
    } else {
        return false;
    }
}

boolean contains(Range r, int x) {
    return r.a <= x && x <= r.b;
}

class Frame {
    Range x, y, z;

    void rotate() {
        Range tmp = x;
        x = y;
        y = z;
        z = tmp;
    }

    @Override
    public String toString() {
        return "frame(" + x + ", " + y + ", " + z + ")";
    }
}

boolean isPositionProperInThisRotation(ArrayList<Frame> frames) {
    Range flatXSum = rangeSumNeutral();
    Range flatYSum = rangeSumNeutral();
    Range flatZSum = rangeSumNeutral();
    Range flatXProduct = rangeProductNeutral();
    Range flatYProduct = rangeProductNeutral();

    boolean anyFlat = false;
    boolean anyHook = false;

    for (Frame frame : frames) if (frame.z.a == frame.z.b) {
        anyFlat = true;
        sum(flatXSum, frame.x);
        sum(flatYSum, frame.y);
        sum(flatZSum, frame.z);
        product(flatXProduct, frame.x);
        product(flatYProduct, frame.y);
    }

    for (Frame frame : frames) if (frame.z.a != frame.z.b) {
        anyHook = true;
        if (!contains(frame.z, flatZSum)) {
            return false;
        }

        if (frame.x.a == frame.x.b) {
            if (contains(flatXProduct, frame.x) && contains(flatYProduct, frame.y.a) && !contains(flatYSum, frame.y.b)) {
                continue;
            } else {
            }
        } else {
            if (contains(flatYProduct, frame.y) && contains(flatXProduct, frame.x.a) && !contains(flatXSum, frame.x.b)) {
                continue;
            } else {
            }
        }
        if (frame.x.a == frame.x.b) {
            if (contains(flatXProduct, frame.x) && contains(flatYProduct, frame.y.b) && !contains(flatYSum, frame.y.a)) {
                continue;
            } else {
            }
        } else {
            if (contains(flatYProduct, frame.y) && contains(flatXProduct, frame.x.b) && !contains(flatXSum, frame.x.a)) {
                continue;
            } else {
            }
        }

        return false;
    }

    return anyFlat && anyHook;
}

void rotate(ArrayList<Frame> frames) {
    for (Frame frame : frames) {
        frame.rotate();
    }
}

boolean isPositionProper(ArrayList<Frame> frames) {
    for (int i = 0; i < 3; i++) {
        if (isPositionProperInThisRotation(frames)) {
            return true;
        }
        rotate(frames);
    }
    return false;
}

void solve() throws IOException {
    IntReader reader = new IntReader();
    int z = reader.next();
    for (int zz = 0; zz < z; zz++) {
        int n = reader.next();
        ArrayList<Frame> frames = new ArrayList<Frame>();
        for (int i = 0; i < n; i++) {
            int x1 = reader.next();
            int y1 = reader.next();
            int z1 = reader.next();
            int x2 = reader.next();
            int y2 = reader.next();
            int z2 = reader.next();
            if (x1 > x2) {
                int tmp = x1; x1 = x2; x2 = tmp;
            }
            if (y1 > y2) {
                int tmp = y1; y1 = y2; y2 = tmp;
            }
            if (z1 > z2) {
                int tmp = z1; z1 = z2; z2 = tmp;
            }
            Frame frame = new Frame();
            frame.x = new Range(x1, x2);
            frame.y = new Range(y1, y2);
            frame.z = new Range(z1, z2);
            frames.add(frame);
        }
        if (isPositionProper(frames)) {
            System.out.println("YES");
        } else {
            System.out.println("NO");
        }
    }
}

public static void main(String[] args) throws IOException {
    new h().solve();
}

} // class h