need help with string formatting

for (int i = 1; i < 13; i++)   
    Console.WriteLine("{0,-1} {1,8}", i, numUser * i);

for (int i = 1; i < 13; i++)   
    Console.WriteLine("{0,-1} {1,8}", i, numUser * i);

using System;

public class Program
{
    public static void Main()
    {
        for(var i = 0; i < 12; i++){
            var number = i.ToString().PadRight(2);
            var square = (i * i).ToString().PadRight(3);
            Console.WriteLine($"{number}\t{square}");
        }
    }
}

using System;

public class Program
{
    public static void Main()
    {
        for(var i = 0; i < 12; i++){
            var number = i.ToString().PadRight(2);
            var square = (i * i).ToString().PadRight(3);
            Console.WriteLine($"{number}\t{square}");
        }
    }
}

using System;

public class Program
{
    public static void Main()
    {
        for(var i = 0; i < 12; i++){
            Console.WriteLine($"{i,-2}\t{i*i,-3}");
        }
    }
}

using System;

public class Program
{
    public static void Main()
    {
        for(var i = 0; i < 12; i++){
            Console.WriteLine($"{i,-2}\t{i*i,-3}");
        }
    }
}