using System;
 
namespace A
{
    class Program
    {
        static string[] ins = { "", "*", "**", "***" };
        static int indMax = ins.Length;
        static string myString = "mama";
        static int[] indx = new int[myString.Length - 1];
 
        static bool incc(int y, int carry)
        {
            if ((y == indx.Length)) {
                Console.WriteLine(myString[myString.Length - 1]);
                return (carry != 1); }
            int carry1 = Math.DivRem(indx[y] + carry, indMax, out indx[y]);
            Console.Write("{0}{1}", myString[y], ins[indx[y]]);
            return incc(y + 1, carry1);
        }
 
        static void Main(string[] args)
        {
            while (incc(0, 1));
        }
 
    }
}
 

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