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

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
/**
 * Created by IntelliJ IDEA.
 * User: ashevenkov
 * Date: 14.04.12
 * Time: 11:17
 */
package codejam.codejam2012;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * @author ashevenkov
 */
public class QualificationC {

    public static void main(String[] args) throws Exception {
        new QualificationC().calculate(
                "/home/ashevenkov/projects/codejam/C-small-attempt0.in",
                "/home/ashevenkov/projects/codejam/C-small-attempt0.out");
    }

    public void calculate(String in, String out) throws Exception {
        BufferedReader br = new BufferedReader(new FileReader(in));
        FileWriter fw = new FileWriter(out);
        String line = br.readLine();
        int cases = Integer.parseInt(line);
        for(int i = 0; i < cases; i++) {
            line = br.readLine();
            String[] parts = line.split(" ");
            int a = Integer.parseInt(parts[0]);
            int b = Integer.parseInt(parts[1]);
            String result = recycle(a, b);
            System.out.println("Case #" + (i + 1) + ": " + result);
            fw.write("Case #" + (i + 1) + ": " + result);
            fw.write("\n");
        }
        fw.flush();
        fw.close();
    }

    private String recycle(int a, int b) {
        int result = 0;
        for(int i = a; i <= b; i++) {
            String s = Integer.toString(i);
            String s1 = s+s;
            Set<Integer> set = new HashSet<Integer>();
            for(int j = 1; j < s.length(); j++) {
                int k = Integer.parseInt(s1.substring(j, j + s.length()));
                set.add(k);
            }
            for(Integer k : set) {
                if(a <= k && k <= b && i < k) {
                    result++;
                }
            }
        }
        return Integer.toString(result);
    }

}
