std::cin >> inputCount;

for(int i = 0; inputCount * 3 > i; ++ i)
{
    std::cin >> inputVertexX[i] >> inputVertexY[i];

    if(1000 < inputVertexX[i] || 1000 < inputVertexY[i] ||
       1 > inputVertexX[i] || 1 > inputVertexY[i])
    {
        return 0;
    }
}

for(int index = 0; inputCount > index; ++index)
{
    i = index * 3;

    if(inputVertexX[i] != inputVertexX[i + 1])
    {
        if(inputVertexX[i] != inputVertexX[i + 2])
        {
            outputVertexX[index] = inputVertexX[i];
        }
        else
        {
            outputVertexX[index] = inputVertexX[i + 1];
        }
    }
    else
    {
        outputVertexX[index] = inputVertexX[i + 2];
    }

    if(inputVertexY[i] != inputVertexY[i + 1])
    {
        if(inputVertexY[i] != inputVertexY[i + 2])
        {
            outputVertexY[index] = inputVertexY[i];
        }
        else
        {
            outputVertexY[index] = inputVertexY[i+1];
        }
    }
    else
    {
        outputVertexY[index] = inputVertexY[i + 2];
    }
}

for(int i = 0; inputCount > i; ++i)
{
    std::cout << outputVertexX[i] << " " << outputVertexY[i] << "\n";
}

return 0;