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();
		}


	}

}

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

/**
 *
 * @author Saikat Roy
 */
import java.io.*;
public class Main2 {
    
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

    public void input() throws IOException
    {
       int k=1;
       int n=Integer.parseInt(br.readLine());
       while(n--!=0)
       {
           int flag=0;
           String[] str2=new String[25];
           String str1=br.readLine();
           String stcpy="";
           str2=str1.split("[ ]");
           int i=(int) Math.pow(10,str2[0].length()-1);
           for(int x=Integer.parseInt(str2[0]);x<=Integer.parseInt(str2[1]);x++)
           {
             if(i!=1){
                 String mx=String.valueOf(x);
                 
                 for(int l=1;l<mx.length();l++)
                 {
                     int mark=1;
                     String st="";
                     for(int m=l;m<mx.length();m++)
                     st+=mx.charAt(m);
                     for(int m=0;m<l;m++)
                         st+=mx.charAt(m);
                     //System.out.println(st);
                     if(Integer.parseInt(st)>Integer.parseInt(mx)&&Integer.parseInt(st)<=Integer.parseInt(str2[1]))
                     {
                         if(stcpy.equals(st))
                         mark=0;
                         
                         if(mark!=0)
                         {
                        flag++;
                        stcpy="";
                        stcpy+=st;
                        //System.out.println(mx+":"+st);
                         }}
                 }
             }  
             else
                 flag=0;
               
           }
          System.out.print("Case #"+k+": "+flag);
          System.out.println();
           //System.out.println(Integer.parseInt("201")<Integer.parseInt("012")?true:false);
           k++;
       }
           }
     public static void main(String[] args) throws IOException {
        Main2 ob=new Main2();
        ob.input();
    }
    
}
