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));
			
		}
		
		
		

	}
	
	
}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam12;

import java.io.*;
import java.util.StringTokenizer;

/**
 *
 * @author Mohamed Ibrahim (MIM)
 */
public class Problem_C {

    public static String strSet(String str, char c, int index) {
        return str.substring(0, index) + c + str.substring(index + 1);
    }

    public static void main(String[] args) throws IOException {

        BufferedReader r = new BufferedReader(new FileReader("C-small-attempt0.in"));
        PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter("C-small-attempt0.out")));

        int nCases = Integer.parseInt(r.readLine());

        for (Integer k = 1; k <= nCases; k++) {
            w.print("Case #" + k + ": ");
            String line = r.readLine();
            StringTokenizer st = new StringTokenizer(line);
            int n = Integer.parseInt(st.nextToken());
            int m = Integer.parseInt(st.nextToken());
            int ret = 0;
            for (int i = n; i <= m; i++) {
                String val = String.valueOf(i);
                char z = val.charAt(val.length() - 1);
                String cur = val.substring(0, val.length() - 1);
                cur = z + cur;
                while (!val.equals(cur)) {
                    if (Integer.parseInt(cur) <= m && cur.charAt(0) != '0'
                            && Integer.parseInt(val) < Integer.parseInt(cur)) {
                        ret++;
                        //System.out.println(val + " " + cur + " " + m);
                    }
                    z = cur.charAt(val.length() - 1);
                    cur = cur.substring(0, val.length() - 1);
                    cur = z + cur;
                }
            }
        //    System.out.println();
        //    System.out.println();
            w.println(ret);
        }
        w.close();


    }
}
