/*
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 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


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

public class C
{
	public static void main( String args[] )throws Exception
	{
		ArrayList<String> arr = new ArrayList<String>();
		Scanner in = new Scanner( System.in );
		String nStr, pref, suff;
		int i, j, a, b, count, test, lengthN, temp, lengthTemp;
		
		test = in.nextInt();
		
		for( i = 0 ; i < test ; i++ )
		{
			a = in.nextInt();
			b = in.nextInt();
			count = 0;
			arr.clear();
			
			int low = a;
			
			if( a < 10 )
			{
				a = 10;
			}
			
			while( a < b )
			{
				nStr = Integer.toString( a );
				lengthN = nStr.length();
				
				for( j = 1 ; j < lengthN ; j++ )
				{
					pref = nStr.substring( 0, lengthN - j );
					suff = nStr.substring( lengthN - j, lengthN );
					//if( i == 3 )
						//System.out.println( pref + " " + suff );
					String tempStr = suff + pref;
					temp = Integer.parseInt( tempStr );
					lengthTemp = Integer.toString( temp ).length();
					
					if( lengthTemp == lengthN && temp != a )
					{
						String ct = nStr + tempStr;
						if( !arr.contains( ct ) && temp <= b && temp >= low )
						{
							arr.add( ct );
							arr.add( tempStr + nStr );
							//if( i == 3 )
								//System.out.println( a + " " + temp );
							count++;
						}
					}
					else
					{
						//if( i == 3 )
							//System.out.println( "GA MASUK " + a + " " + temp );
					}
				}
				
				//System.out.println();
				a++;
			}
				 
			
			System.out.println( "Case #" + (i+1) + ": " + count );
		}
	}
}

class Pair
{
	int x;
	int y;

	public Pair( int x, int y )
	{
		this.x = x;
		this.y = y;
	}
}	