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();
		}
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam12;

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

/**
 *
 * @author Mohamed Ibrahim (MIM)
 */
public class Problem_C {

    public static String strSet(String str, char c, int index) {
        return str.substring(0, index) + c + str.substring(index + 1);
    }

    public static void main(String[] args) throws IOException {

        BufferedReader r = new BufferedReader(new FileReader("C-large.in"));
        PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter("C-large.out")));

        int nCases = Integer.parseInt(r.readLine());

        for (Integer k = 1; k <= nCases; k++) {
            w.print("Case #" + k + ": ");
            String line = r.readLine();
            StringTokenizer st = new StringTokenizer(line);
            int n = Integer.parseInt(st.nextToken());
            int m = Integer.parseInt(st.nextToken());
            int ret = 0;
            for (int i = n; i <= m; i++) {
                String val = String.valueOf(i);
                char z = val.charAt(val.length() - 1);
                String cur = val.substring(0, val.length() - 1);
                cur = z + cur;
                while (!val.equals(cur)) {
                    if (Integer.parseInt(cur) <= m && cur.charAt(0) != '0'
                            && Integer.parseInt(val) < Integer.parseInt(cur)) {
                        ret++;
                        //System.out.println(val + " " + cur + " " + m);
                    }
                    z = cur.charAt(val.length() - 1);
                    cur = cur.substring(0, val.length() - 1);
                    cur = z + cur;
                }
            }
        //    System.out.println();
        //    System.out.println();
            w.println(ret);
        }
        w.close();


    }
}
