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();
    }
}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * User: aeg
 * Date: 12/04/14
 * Time: 22:58
 * To change this template use File | Settings | File Templates.
 */
public class ReceycledNumbers {
    public static void main (String[] argc) throws FileNotFoundException {
        ReceycledNumbers  renum = new ReceycledNumbers();
        renum.solve();

    }

    private void solve() throws FileNotFoundException {
        FileInputStream fis = new FileInputStream("csv/QR_C/C-large.in");
        Scanner sc = new Scanner(fis);

        int T = sc.nextInt();

        loop:
        for (int i = 0; i < T; i++) {
            int A = sc.nextInt();
            int B = sc.nextInt();
            int count =0;

            System.out.print("Case #"+(i+1)+": ");
            if (B < 10) {
                System.out.println("0");
                continue;
            }
            for (int j = A; j < B; j++) {
                String str = ((Integer) j).toString();
                count +=tryRecycle(str, j, B);

            }
            System.out.println(count);
        }
      }

    private int tryRecycle(String str, int j, int b) {
        int count=0;
        for(int i=1;i<str.length();i++){
            String s2 = str.substring(str.length()-i,str.length()) + str.substring(0,str.length()-i);
            Integer i2 = Integer.valueOf(s2);
            if ((j < i2) && (i2 <= b)) {
                count++;
            }
        }
        return count;
    }


}
