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));
			
		}
		
		
		

	}
	
	
}
package compete;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class Recycle {
	private static void print(String sth) {
		System.out.println(sth);
	}

    private static int recycle(int A, int B) {
        
        int n=0;
        for (int i=A;i<B;i++) {
            String t = i+"";

            ArrayList<Integer> l = new ArrayList<Integer>();
            for (int k=0;k<t.length();k++) {
                char c = t.charAt(0);
                t = t.substring(1)+c;	
                if (t.charAt(0)=='0') continue;
                int ti = Integer.parseInt(t);
                if (ti>B||ti<=i) continue;
                if (!l.contains(ti)) {
                	l.add(ti);
                	n++;
                }
            }
        }

        return n;
    }

	public static void main(String args[]) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("input.txt"));
		
		int num = Integer.parseInt(in.readLine());
		
		for (int i=0;i<num;i++) {
			String sentence = in.readLine();
			Scanner s = new Scanner(sentence);
			
			int A = s.nextInt();
			int B = s.nextInt();
			
			print("Case #"+(1+i)+": "+recycle(A,B));
		}	
	}
}
