import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;

public abstract class Solution{
	protected Problem problem;
	private String problemFileName;
    
	abstract public StringBuffer solve();

    public Solution(String problemFileName){
		this.problemFileName = problemFileName;
		problem = new Problem(problemFileName);
	}
	
	public void saveToFile(StringBuffer buffer){
		try {
			File f = new File(problemFileName);
			String fileout = stripExtension(f.getName())+".out";
			BufferedWriter out = new BufferedWriter(new FileWriter(fileout));
			String outText = buffer.toString();
			System.out.println(outText);
			out.write(outText);
			out.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}		
	}	
	
    static String stripExtension (String str) {
        if (str == null) return null;
        int pos = str.lastIndexOf(".");
        if (pos == -1) return str;
        return str.substring(0, pos);
    }	
        
}

class Problem{
	private String[] cases; 

	public Problem(String filename){
		// TODO Auto-generated method stub
		try{
			// Open the file that is the first 
			// command line parameter
			FileInputStream fstream = new FileInputStream(filename);
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			int totalCase = Integer.parseInt(br.readLine());
			int i = 0;
			cases = new String[totalCase];
			//Read File Line By Line
			while ( (i<totalCase) && (strLine = br.readLine()) != null)   {
				// Print the content on the console
				if(strLine.length()>0){
					cases[i] = strLine;
					i++;
				}
			}
			//Close the input stream
			in.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

	public int count(){
		return cases.length;
	}
	
	public String getCase(int index){
		return cases[index];
	}
}