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 it.simone.google.code.jam2012;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class GoogleCodeJamManager {
	
	public static void main(String[] args) {
//		GoogleCodeExercise tm = new Translator();
//		GoogleCodeJamManager.execute("inputFile_Translator.in","outputFile_Translator.out",tm);
//		GoogleCodeExercise dancer = new Dancer();
//		GoogleCodeJamManager.execute("inputFile_Dancer.in","outputFile_Dancer.out",dancer);
		GoogleCodeExercise recycled = new RecycledNumber();
		GoogleCodeJamManager.execute("inputFile_Recycled.in","outputFile_Recycled.out",recycled);
	}

	public static void execute(String inputFile,String outputFile,GoogleCodeExercise exercise) {

		BufferedReader br = null;
		BufferedWriter bw=null;
		int testNumber=0;
		
		try {
			exercise.initialize();
			br = new BufferedReader(new FileReader(inputFile));
			bw=new BufferedWriter(new FileWriter(outputFile));
			String line = br.readLine();
			testNumber=Integer.parseInt(line);
			line=br.readLine();
			int testCounter=1;
			while (line != null) {
				System.out.println("Test" +testCounter +"/"+testNumber+ "\t Line=" + line);
				String translatedLine=exercise.execute(line);
				bw.write("Case #"+testCounter+": "+translatedLine+"\n");
				line=br.readLine();
				testCounter++;
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {

			try {
				if (br != null)
					br.close();
				if(bw!=null)
					bw.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}		
	}

}
