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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.*;


public class C {
	Scanner sc;
	PrintStream ps;

	public void solve() {
		int A = sc.nextInt();
		int B = sc.nextInt();
		
		int nr = 0;
		for (int n=A; n<=B; n++) {
			String s = n+"";
			HashSet<Integer> set = new HashSet<Integer>();
			for (int i=0; i<s.length(); i++) {
				String t = s.substring(i) + s.substring(0, i);
				int m = Integer.parseInt(t);
				if ((n < m) && (m <= B)) {
					set.add(m);
				}
			}
			nr += set.size();
		}
		
		ps.println(nr);
	}
	
	
	public void run(String[] args) throws FileNotFoundException {
		sc = new Scanner(new File("C.in"));
		ps = System.out; // new PrintWriter("C.out");
		int num_tests = sc.nextInt();
		sc.nextLine();
		
		for (int test=1; test<=num_tests; test++) {
			ps.print("Case #"+test+": ");
			
			solve();
			
		}
		ps.close();
		
	}
	
	public static void main(String[] args) throws FileNotFoundException {
		C a = new C();
		a.run(args);
	}
}
