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.io.FileReader;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.Vector;


public class Recycled {
	public static void main(String[] args) throws FileNotFoundException {

		Scanner in = new Scanner(new FileReader(new File("C-small-attempt0.in")));
		
		PrintWriter out = new PrintWriter(new File("C-small-attempt0.out"));
		
		int t = in.nextInt();
		in.nextLine();
		
		for(int i=0; i<t; i++) {
			int a = in.nextInt();
			int b = in.nextInt();
			int l = Integer.toString(a).length();
			int r = 0;
			

//			System.out.println("a="+a+"\tb="+b);
			
			Vector<Integer> sub = new Vector<Integer>(20); 
			
			for(int c=a; c<=b; c++) {
				String cs = Integer.toString(c);
				
				sub.removeAllElements();

				for(int k=1; k<l;k++) {
					cs = cs.substring(1) + cs.charAt(0);
					if (cs.charAt(0) == '0') continue;

					int ns = Integer.parseInt(cs);
					if (ns > c && ns <= b && !sub.contains(ns)) {
						sub.add(ns);
						r++;
//						System.out.println(c+" -> "+ns);
					}
				}
//				System.out.println("......");
			}
			
			System.out.println("Case #" + (i+1)+ " of "+t+": " + r);
//			System.out.println("==================");
			
			out.println("Case #" + (i+1)+ ": " + r);
		}
		out.close();
	}
}
