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

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
    private Scanner in;
    private PrintWriter out;
    public long output;
    public int A;
    public int B;
    /**
     * main method
     */
    public static void main(String args[]){
        new RecycledNumbers("C-large.in");
    }
    
    /**
     * constructor
     */
    public RecycledNumbers(String filename){
        initIO(filename);
        
        int n = in.nextInt();
//    	long tmStart = System.currentTimeMillis();
        
        for(int i=1;i<=n;i++){
            A = in.nextInt();
            B = in.nextInt();
            output = 0;
            output=solve();
            out.println("Case #"+i+": "+output);
        }
//        System.out.println(System.currentTimeMillis() - tmStart);
        
       closeIO();
    }
    public long solve(){
    	long op=0;
		Set<Integer> s = new HashSet<Integer>();
    	for(int i=A;i<=B;i++){
    		String stringI = Integer.toString(i);
    		s.clear();
    		for(int ind=stringI.length()-1;ind>0;ind--){
    			if(stringI.substring(ind).charAt(0)!= '0'){
    				String stringTemp = stringI.substring(ind) + stringI.substring(0, ind);
    				if(Integer.parseInt(stringTemp) > i && Integer.parseInt(stringTemp)<=B){
//    					System.out.println(stringI + "  "+Integer.parseInt(stringTemp));
    					s.add(Integer.parseInt(stringTemp));
//    					op++;
    				}
    			}
    		}
    		op+=s.size();
    	}
    	return op;
    }
    
    /**
     * Set up devices to do I/O
     */
    public void initIO(String filename){
        try {
            in = new Scanner(new FileReader(filename));
            out = new PrintWriter(new FileWriter(filename+".out"));
        }catch (IOException except) {
            System.err.println("File is missing!");
        }
    }
    
    /**
     * Free memory used for I/O
     */
    public void closeIO(){
        in.close();
        out.close();
    }

   
}
