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.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.*;

public class Recycle {
	
	public int count(int start, int end) {
		int count = 0;
		HashSet<Integer> numbers = new HashSet<Integer>();
		int numDigits = (int)Math.log10(start) + 1;
		
		for(int i = start; i <= end; i++) {
			HashSet<Integer> rotations = getRotations(i, numDigits);
			for(int r : rotations) {
				if(numbers.contains(r)) {
					count++;
				}
			}
			numbers.add(i);
		}
		
		
		return count;
	}
	
	
	public HashSet<Integer> getRotations(int input, int numDigits) {
		HashSet<Integer> result = new HashSet<Integer>();
		for(int i = 0; i < numDigits - 1; i++) {
			int power = (int)Math.pow(10, i+1);
			int edge = input % power;
			result.add( (input - edge) / power + edge * (int)Math.pow(10, numDigits - i - 1) );
		}
		
		return result;
	}
	
	public static void main(String args[]) {
		Recycle c = new Recycle();
		String result[] = null;
		
		
		try {
			Scanner sc = new Scanner(new FileInputStream("C:/Users/Administrator/Downloads/C-small-attempt0.in"));
			String line = sc.nextLine().trim();
			int cases = Integer.parseInt(line);
			result = new String[cases];
			for(int i = 0; i < cases; i++) {
				line = sc.nextLine().trim();
				String temp[] = line.split(" ");
				int start = Integer.parseInt(temp[0]);
				int end = Integer.parseInt(temp[1]);
			
				result[i] = "Case #" + (i+1) + ": " + c.count(start, end);
			}
			
		} catch(Exception e) {
			e.printStackTrace();
		}
		
		try {
			 FileWriter fstream = new FileWriter("C:/out.txt");
			 PrintWriter out = new PrintWriter(fstream);
			 
			 for(int i = 0; i < result.length; i++) {
				 out.println(result[i]);
			 }
			 out.close();
		}catch(Exception e) {
			e.printStackTrace();
		}
	}
}
