import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
package recyclednumbers;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashSet;

/**
 * @author Emmanuel JS Hoarau - Google Code Jam 2012
 */
public class RecycledNumbers {
    
    String executeLine(final String line) {
        String words[] = line.split(" ");
        String sa = words[0], sb = words[1];
        int a = Integer.parseInt(sa);
        int b = Integer.parseInt(sb);
        
        int result = 0;
        for (int n = a; n <= b; ++n) {
            HashSet<String> matches = new HashSet<String>();
            String s = Integer.toString(n);
            String ss = s + s.substring(0, s.length()-1);
            int l = s.length();
            for (int j = 1; j < l; ++j) {
                if (ss.charAt(j) != '0') {
                    String r = ss.substring(j, j+l);
                    if ((r.compareTo(s) > 0) && (r.compareTo(sa) >= 0) && (r.compareTo(sb) <= 0) && !matches.contains(r)) {
                        matches.add(r);
                        ++result;
                    }
                }
            }
        }
        
        return Integer.toString(result);
    }

    void execute() {
        try {
            InputStreamReader stream = new InputStreamReader(System.in);
            BufferedReader reader = new BufferedReader(stream);
        
            String line = reader.readLine();
            int lines = Integer.parseInt(line);
            for (int i = 1; i <= lines; ++i) {
                line = reader.readLine();
                StringBuilder out = new StringBuilder();
                out.append("Case #");
                out.append(i);
                out.append(": ");
                out.append(executeLine(line));
                System.out.println(out.toString());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        new RecycledNumbers().execute();
    }
}

