import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.util.*;
import java.io.*;
public class Cat
{
    public static void main(String arg[])throws IOException
    {
        FileReader fin=new FileReader(arg[0]);
        FileWriter fout=new FileWriter("Output.txt");
        Scanner src=new Scanner(fin);
        Scanner t1=new Scanner(src.nextLine());
        int cases=(t1.nextInt());
        int no=0;
        int ans=0;
        while(src.hasNext())
        {
            Scanner temp=new Scanner(src.nextLine());
            no++;
            ans=0;
            
            long A=temp.nextInt();
            long B=temp.nextInt();
            long t=A;
            while(t<=B)
            {
                int count=0;
                long n=t;
                do
                {
                    n=n/10;
                    count++;
                }while(n!=0);
                for(int i=1;i<count;i++)
                {
                    long power=(long)Math.pow(10,i);
                    long r=t%power;
                    long t2=t/power;
                    long n1=r*(long)Math.pow(10,count-i)+t2;
                    if(n1<=B&&n1>t)
                    ans++;
                }
                t++;
            }
            fout.write("Case #"+no+": "+ans+"\n");
            
        }
        fout.close();
    }
}