using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var random = new Random();

        var array = new int[12];

        for (int i = 0; i < array.Length; i++)

        {

            var next = random.Next(1, 91);

            while (array.Contains(next)) next = random.Next(1, 91);

            array[i] = next;

        }

        Console.WriteLine(string.Join(", ", array.Take(6).OrderBy(x => x)));

        Console.WriteLine(string.Join(", ", array.Skip(6).Take(6).OrderBy(x => x)));

    }

}