import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;

/**
 *
 * @author Jason
 */
public class NumberCruncher {
    public NumberCruncher(BufferedReader reader) {
        try {
            FileWriter outFile = new FileWriter(("output.txt"));
            PrintWriter out = new PrintWriter(outFile);
        
            int cases = Integer.parseInt(reader.readLine());
            for(int i=1;i<=cases;i++) {
                String list = reader.readLine();
                String separator = " ";
                ArrayList<String> nums = new ArrayList<String>(Arrays.asList(list.split(separator)));
                int recycled = 0;
                
                //System.out.println(nums.toString());
                HashSet<String> result = new HashSet<String>();
                ArrayList<String> aChars = StringToArrayList(nums.get(0));
                
                //System.out.println("aChars: " + aChars.toString());
                //System.out.println("Value of aChars: " + ValueOfList(aChars));
                
                int A = Integer.parseInt(nums.get(0));
                int B = Integer.parseInt(nums.get(1));
                
                //System.out.println("A: " + A);
                //System.out.println("B: " + B);
                
                while (ValueOfList(aChars) < B) {
                    ArrayList<String> temp = new ArrayList<String>(aChars);
                    //System.out.println("Value of aChars: " + ValueOfList(aChars));
                    
                    for(int j=0;j<(aChars.size()-1);j++) {
                        
                        String tStr = temp.get(aChars.size()-1);
                        temp.remove(aChars.size()-1);
                        temp.add(0, tStr);
                        
                        if(ValueOfList(temp) <= B && ValueOfList(aChars) < ValueOfList(temp) && temp.size() == aChars.size()) {
                            recycled++;
                            String toAdd = ValueOfList(aChars) + "->" + ValueOfList(temp);
                            result.add(toAdd);
                            //System.out.println(ValueOfList(aChars) + "->" + ValueOfList(temp) + " IS RECYCLED!");
                            //System.out.println("IS RECYCLED!");
                        }
                    }
                    
                    aChars = Increment(aChars);
                }
                //System.out.println("Case #"+i+": " + result.size());
                out.println("Case #"+i+": " + result.size());
            }
            out.close();
        }catch(IOException e){System.out.println("Exception!");}
    }
    
    private int ValueOfList(ArrayList<String> l) {
        int sum = 0;
        int digits = l.size();
        for(String str : l) {
            digits--;
            sum += (Integer.parseInt(str) * Math.pow(10, digits));
        }
        return sum;
    }
    
    private ArrayList<String> Increment(ArrayList<String> l) {
        int v = ValueOfList(l);
        v++;
        String s = Integer.toString(v);
        return StringToArrayList(s);
    }
    
    private ArrayList<String> StringToArrayList(String str) {
        ArrayList<String> newArray = new ArrayList<String>();
        
        for(int i=0;i<str.length();i++) {
            char currentChar = str.charAt(i);
            newArray.add(Character.toString(currentChar));
        }
        return newArray;
    }
}
