package codejam;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class Pairs {

	/**
	 * @param args
	 */
	
	public static int counter=0;
	
	public static void checkhelper(String a,String b)
	{
		if(a.length()!=b.length())
			return;
		if(a.concat(a).contains(b))
			counter++;	
	}
	
	
	public static void check(int a,int b)
	{
		for(int i=a;i<=b;i++)
		{
			for(int j=i+1;j<=b;j++)
			checkhelper(""+i, ""+j);
			
		}
		
		
	}
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub

		
		BufferedWriter bw=new BufferedWriter(new FileWriter("out2.out"));
		BufferedReader bf=new BufferedReader(new FileReader("input.txt"));
		int count=Integer.parseInt(bf.readLine());
		for(int i=0;i<count-1;i++)
		{
			
			String line=bf.readLine();
		String []a=line.split(" ");
		
		check(Integer.parseInt(a[0]),Integer.parseInt(a[1]));
	
	bw.write("Case #"+(i+1)+": "+counter);
	bw.newLine();
	counter=0;
	}
		
		String line=bf.readLine();
		String []a=line.split(" ");
		
		check(Integer.parseInt(a[0]),Integer.parseInt(a[1]));
	
	
	bw.write("Case #"+(count)+": "+counter);
	bw.close();
	}

}
