import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

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

/**
 *
 * @author Joel
 */
import java.io.*;
public class RecycledNumbers
{
    public static void main(String[] args)
    {
        try
        {
            FileWriter output = new FileWriter("C:\\Users\\Joel\\Documents\\CSCI 221\\Netbeans Projects\\Google CodeJam\\src\\C-large.out");
            BufferedWriter out = new BufferedWriter(output);
            FileReader reader = new FileReader("C:\\Users\\Joel\\Documents\\CSCI 221\\Netbeans Projects\\Google CodeJam\\src\\C-large.in");
            BufferedReader in = new BufferedReader(reader);
            int p = Integer.parseInt(in.readLine());
            StringBuilder test;
            int count = 0;
            for (int i = 0; i < p; i++)
            {
                String nums = in.readLine();
                int m = Integer.parseInt(nums.substring((nums.indexOf(" ")) + 1));
                int n = Integer.parseInt(nums.substring(0, nums.indexOf(" ")));
                for (int j = n; j < (m+1); j++)
                {
                    test = new StringBuilder(Integer.toString(j));
                    int k;
                    do
                    {
                        char move = test.charAt(test.length() - 1);
                        test.insert(0, move);
                        test.deleteCharAt(test.length() - 1);
                        k = Integer.parseInt(test.toString());
                        if (k > j && k < (m + 1) && k != j)
                            count++;
                    }
                    while(k != j);
                }
                out.write("Case #" + (i + 1) + ": " + count + "\n");
                count = 0;
            }
            out.close();
        }
        catch (IOException e)
        {
            
        }
    }
}
