using System;
using System.Collections.Generic;

public class Test
{
    public void doAList(List<(int tof, int pw)> pig, int n)
    {
        for (int j = 0; j < n; j++)
            pig.Add((tof: j * 2 + 1, pw: j * 3 + 2));
    }

    public static void Main()
    {
        Test t = new Test();
        List<(int tof, int pw)> p = new List<(int tof, int pw)>();

        t.doAList(p, 3);

        for (int j = 0; j < p.Count; j++)
            Console.WriteLine($"{j} : {p[j].tof}, {p[j].pw}");
    }
}