import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;

/**
 * @(#)RecycleNumber.java, 2012-4-14. 
 * 
 * Copyright 2012 Netease, Inc. All rights reserved.
 * NETEASE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/**
 *
 * @author bjdengdong
 *
 */
public class RecycleNumber {

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("E:\\google_code_jam\\C-small-attempt0.in")));
        PrintStream out = new PrintStream(new FileOutputStream("E:\\google_code_jam\\C-small-attempt0.out"));
        
        int t = Integer.parseInt(br.readLine());
        
        for (int i = 1; i <= t; i++) {
            String line = br.readLine();
            String[] sp = line.split(Pattern.quote(" "));
            int digits = sp[0].length();
            int a = Integer.parseInt(sp[0]), b = Integer.parseInt(sp[1]);
            if (a < 10 && b < 10) {
                out.println("Case #" + i + ": 0");
                continue;
            }
            int result = 0;
            Set<Integer> set = new HashSet<Integer>();
            for (int num = a; num <= b; num++) {
                String str = ("" + num);
                set.clear();
                for (int j = digits - 1, k = 1; j >= 1; j--, k++) {
                    if (str.charAt(k) == '0')
                        continue;
                    int rec = Integer.parseInt(str.substring(k)
                            + str.substring(0, k));
                    if (rec > num && rec <= b) {
                        if(!set.contains(rec)){
                            set.add(rec);
                            result++;
                        }
                    }
                }
            }
            out.println("Case #" + i + ": " + result);
        }
        
    }

}
