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.*;
import java.lang.*;
import java.util.*;

public class C {
  public static void main(String[] args) {
    C prob = new C();
    prob.run(args[0]);
  }

  public void run(String fileName) {
    try {
      Scanner fin = new Scanner(new File(fileName));
      PrintWriter fout = new PrintWriter(new File(fileName + ".out"));

      int T = fin.nextInt();
      for (int t = 1; t <= T; ++t) {
        fout.format("Case #%d: ", t);

        int A = fin.nextInt();
        int B = fin.nextInt();
        int result = 0;

        TreeSet<Integer> pairs = new TreeSet<Integer>();
        for (int i = A; i <= B; ++i) {
          String a = Integer.toString(i);
          pairs.clear();
          for (int j = 1; j < a.length(); ++j) {
            String b = a.substring(j) + a.substring(0, j);
            if (b.charAt(0) == '0') continue;
            int m = Integer.valueOf(b);
            if ((m >= A) && (m <= B) && (m != i)) {
              pairs.add(m);
            }
          }
          result += pairs.size();
        }
        result /= 2;

        fout.format("%d\n", result);
      }

      fin.close();
      fout.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}
