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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package CD;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Hashtable;

public class RC{
	private int first;
	private int second;
	public RC(int i,int i_s){
		this.first=i;
		this.second=i_s;
	}
	public static  int dist(int mi,int mx){
		Hashtable numbers = new Hashtable();
		if (mx<10){
			return 0;
		}
		for(int i=mi;i<=mx;i++){
			String s=Integer.toString(i);
			for(int e=s.length()-1;e>0;e--){
				String new_s=s.substring(e, s.length())+s.substring(0, e);
				int i_s=Integer.parseInt(new_s);
				if (i_s<=mx && i_s!=i && i_s>=mi){
					String c=Integer.toString(i_s)+Integer.toString(i);
					String b=Integer.toString(i)+Integer.toString(i_s);
					if (!(has(numbers,c)) && !(has(numbers,b))){
						numbers.put(c, 0);
					}
				}
			}
		}
		return numbers.size();
	}
	public static  boolean has(Hashtable numbers,String c){
			if (numbers.get(c)==null){
				return false;
			}
			return true;
	}
	public static void main(String[] args) throws IOException{
		int a=dist(1111,3333);
		System.out.println(Integer.toString(a));
	}
}