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.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class Recycled {
  public static void main(String[] args) {
    try {
      File input = new File("/Users/mtervahauta/Dev/mikkot/codejam/recycled.input");
      //File input = new File(args[0]);
      FileInputStream fStream = new FileInputStream(input);
      BufferedReader bReader = new BufferedReader(
          new InputStreamReader(fStream));
      int cases = Integer.parseInt(bReader.readLine());
      for (int i = 1; i <= cases; i++) {
        String[] values = bReader.readLine().trim().split(" ");
        solveRecycled(i, values[0], values[1]);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  
  private static void solveRecycled(int caseNo, String aStr, String bStr) {
    long a = Long.parseLong(aStr);
    long b = Long.parseLong(bStr);
    //Set<String> nms = new HashSet<String>();
    long count = 0;
    for (long n = a; n <= b; n++) {
      count = findM(count, a, n, b);
    }
    System.out.println("Case #" + caseNo + ": " + count);
  }

  private static long findM(long count, long a, long n, long b) {
    List<Long> recycledValues = recycledStrings(Long.toString(n));
    Set<String> nms = new HashSet<String>();
    for (Long recycledN : recycledValues) {
      long m = recycledN.longValue();
      if (n < m && m <= b) {
        nms.add(n+":"+m);
      }
    }
    return count + nms.size();
  }

  private static List<Long> recycledStrings(String src) {
    List<Long> resp = new ArrayList<Long>();
    int length = src.length();
    String recycled = null;
    for (int i = 1; i < length; i++) {
      recycled = src.substring(length - i);
      recycled = recycled + src.substring(0, length - i);
      if (!recycled.startsWith("0"))
        resp.add(new Long(Long.parseLong(recycled)));
    }
    return resp;
  }
 }