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));
			
		}
		
		
		

	}
	
	
}

import java.io.File;
import java.io.FileNotFoundException;
import java.lang.Integer;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.TreeSet;

public class RecycledNumbers {
    public static void main(String[] args) throws FileNotFoundException {
        Scanner sc = new Scanner(new File("input.in"));
        //Scanner sc = new Scanner(System.in);
        int T=sc.nextInt();

        for( int i=0;i<T;i++) {
            int count =0;
            int A = sc.nextInt();
            int B = sc.nextInt();
            int n = A;
            for(n=A;n<B;n++) {
                int l = Integer.toString(n).length();
                int n2=n;
                int n5=1;
               TreeSet<Integer> L = new TreeSet<Integer>();
                for(int j=1;j<l;j++){
                    n5=n5*10;
                }
                for(int j=1;j<l;j++) {
                    int n3=n2/10;
                    int n4=n2%10;
                    n2=n5*n4+n3;
                   
                    if(n2>n && n2<=B) {
                        if(!L.contains(n2)) {
                            L.add(n2);
                            count ++;
                        }
                    }
                }
            }
            System.out.println("Case #"+(i+1)+": "+count);
        }
    }
}
