import java.util.Scanner;


public class top {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int max = in.nextInt();
		for (int c = 1; c <= max; c++) {
			in.nextLine();
			System.out.println(c);
			if (Math.random() > .3) {
				for (int i = 0; i < 6; i++) {
					for (int j = 0; j < 6; j++) {
						char ch = (Math.random() > .5) ? '#' : '.';
						System.out.print(ch);
					}
					System.out.println("");
				}
			} else {
				System.out.println("No solution");
			}
		}
	}
	
}