import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

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();
    }
  }
}
