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.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;


public class Problem2 {
	public static void main (String[] args) throws IOException {
		File file = new File("input1.txt");
		Scanner scan = null;
		try {
			scan = new Scanner(file);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		FileWriter fstream = null;
		try {
			fstream = new FileWriter("output.txt");
		} catch (IOException e) {
			e.printStackTrace();
		}
		BufferedWriter out = new BufferedWriter(fstream);
		
		int lineNumber;
		lineNumber = Integer.parseInt(scan.nextLine());
		for (int i = 0; i < lineNumber; i++) {
			Scanner lineScan = new Scanner(scan.nextLine());
			out.write("Case #" + (i + 1) + ": ");
			int a = lineScan.nextInt();
			int b = lineScan.nextInt();
			int total = 0;
			
			ArrayList<Integer> prev = new ArrayList<Integer>();
			
			for (int j = a; j <= b; j++) {
				String curr = String.valueOf(j);
				
				for (int k = 1; k < curr.length(); k++) {
					String second = curr.substring(k);
					String first = curr.substring(0, k);
					String afterStr = second + "" + first;
					int after = Integer.parseInt(afterStr);
					if (after > j && after <= b) {
						if (!prev.contains(after)) {
							total++;
							prev.add(after);
						}
					}	
				}
				prev.clear();
			}
			out.write(total + " \n");
		}
		out.close();
		
	}

}
