import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;


public class Main {
	
	public static void main(String args[]) throws NumberFormatException, IOException {
		
		BufferedReader in = new BufferedReader(new FileReader("C-large.in"));
		PrintWriter out = new PrintWriter(new FileWriter("out.txt")); 
		RecycledNumbers prog = new RecycledNumbers();
		
		String inString = "";
		int t = Integer.parseInt(in.readLine());
		
		for(int i = 0; i < t; i++) {
			
			inString = in.readLine();
			String[] word = inString.split(" ");
			int a = Integer.parseInt(word[0]);
			int b = Integer.parseInt(word[1]);
			out.println("Case #" + (i+1) + ": " + prog.getNumbers(a, b));
			
		}
		in.close();
		out.close();
		
	}
	
	private static void printArray(String[] a) {
		
		for(int i = 0; i < a.length; i++) {
			
			System.out.print(a[i] + " ");
			
		}
		System.out.print("\n");
		
	}

}
