import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;


public class Recycled {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try
		{
			Scanner scanner = new Scanner(new File("./data/inRecycled"));
			PrintWriter writer = new PrintWriter(new File("./data/outRecycled"));
			int t = scanner.nextInt();
			scanner.nextLine();
			for(int i = 0; i < t; i++) {
				int a = scanner.nextInt();
				int b = scanner.nextInt();
				
				int res = 0;
				
				String check = "" + a;
				if(check.length() != 1)
				{
					
					for(int j = a; j <= b; j++){
						
						if(check.length() == 2)
						{
							String temp = "" + j;
							String other1 = temp.charAt(1) + "" + temp.charAt(0);
							int ot = Integer.valueOf(other1);
							if( ot <= b && j < ot){
								res++;
							}
						}
						else if(check.length() == 3)
						{
							String temp = "" + j;
							String other1 = "" + temp.charAt(2) + temp.charAt(0) + temp.charAt(1);
							String other2 = "" + temp.charAt(1) + temp.charAt(2) + temp.charAt(0);
							
							int ot1 = Integer.valueOf(other1);
							int ot2 = Integer.valueOf(other2);
							
							if ( ot1 <= b && j < ot1) {
								res++;
							}
							if ( ot2 <= b && j < ot2) {
								res++;
							}
						}
					}
				}
				writer.println("Case #" + (i+1) + ": " + res);

			}
			writer.close();
			scanner.close();
			
		}catch(Exception e) {e.printStackTrace();}
	}

}
