import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.ArrayList;


public class main {

	/**
	 * @param args
	 * @throws Exception 
	 */

	public static int[] flag;
	public static ArrayList[] array;
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		Input in = new Input("small.txt");
		
		File file = new File("out.txt");
		FileWriter filewriter = new FileWriter(file);
		BufferedWriter bw = new BufferedWriter(filewriter);
		PrintWriter pw = new PrintWriter(bw);
		
		int n = in.getInt();
		
		for(int i = 0; i < n ; i ++){
			int result = 0;
			int num = i + 1 ;
			int a = in.getInt();
			int b = in.getInt();	
			int d = Integer.toString(a).length();
			array = new ArrayList[b+1];
			for(int j = a ; j <= b; j++){
				array[j] = new ArrayList();
			}
			for(int j = a ; j <=b ; j++){
				String s = Integer.toString(j) + Integer.toString(j);
				result += solve(s,d,a,b,j);				
			}
			
			String ans = "Case #" +num +": "+result; 
			pw.println(ans);
			System.out.println(ans);
		}
		pw.close();
		bw.close();
		filewriter.close();
	}
	
	public static int solve(String s , int d,int a , int b,int j){
		int result = 0;
		int original = j;
		
		for(int i = 0 ; i < d ; i++){
			String sub = s.substring(i+1, i+1+d);
			int subint = Integer.parseInt(sub);
			
			if(subint >= a && subint <=b && subint !=original){
				if(subint<original){
					int flag = 0;
					for(int k  = 0 ; k < array[subint].size(); k++){
						if(Integer.parseInt(array[subint].get(k).toString())==original){
							flag++;
							break;
						}
					}
					if(flag ==0){
						array[subint].add(original);
						result++;
					}
				}else{
					int flag = 0;
					for(int k  = 0 ; k < array[original].size(); k++){
						if(Integer.parseInt(array[original].get(k).toString())==subint){
							flag++;
							break;
						}
					}
					if(flag ==0){
						array[original].add(subint);
						result++;
					}
				}
			}
			
		}
		return result;
	}

}
