import java.util.Random;

public
	class zestaw0602
	{
		public static void main(String[] args)
		{
			Random valLenght = new Random();
			int x = valLenght.nextInt(5);
			
			char arr[][] = new char [x][x];
			
			for(int i = 0; i < arr.length; i++)
			{
				System.out.println();
				for(int j = 0; j < arr.length; j++)
				{
					Random valChar = new Random();
					arr[i][j] = (char)(valChar.nextInt(2) + 'a');
					if(arr[i][j] == 'a')
						System.out.print(arr[i][j] + " ");
					else
						System.out.print("l ");
				}
			}
			
			System.out.println("\n");

			for(int i = 0; i < arr.length; i++)
			{
				for(int j = 0; j < arr.length; j++)
				{	
					if(arr[i][j] == 'b')
						/*if( >= 0 && i+2 <= x)
							if(arr[i-1][j] == 'b' && arr[i+2][j] == 'b')*/
								System.out.println("ala");
				}
			}
		}
	}