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.File;
 import java.io.FileWriter;
import java.io.IOException;
import java.math.BigInteger;
import java.util.Scanner;
 public class C { 

	static String inner = "input.in";
	static Scanner scan;
	public static void main (String[]args) throws IOException
	{ 
		File f = new File (inner);
		File out = new File("output.out");
		FileWriter wr; 
		wr = new FileWriter(out); 
		scan = new Scanner(f); 
		int test = scan.nextInt();
		scan.nextLine();
		for(int i = 0 ;i < test ; i++)
			wr.write( "Case #"+ (i+1)+": "+testcase(  new BigInteger(""+scan.nextInt()) , new BigInteger(""+scan.nextInt()) )   + "\n");
	 	 wr.flush();
	}
	
	public static int testcase (BigInteger A , BigInteger B)
	{ 
		int ret = 0;
		int len = A.toString().length(); 
		for(BigInteger b = A ; b.compareTo(B) < 1 ;b= b.add(BigInteger.ONE) )
		{
			String []ff = new String [len-1];  
			String s =b.toString(); 
			for(int i = 1 ;i <len ; i++)
			{
				BigInteger dum = new BigInteger(s.substring (i) + s.substring(0,i));
				ff[i-1] = dum.toString();	
				if(dum.compareTo(B)!=1 && dum.compareTo(b)==1)
				{
					boolean skip=false;  
					for(int j =0 ; j < i-1 ; j++)
						if(ff[j].equals(ff[i-1])) 
							skip = true;  
					if(skip) continue;
					ret++;
				 
				} 
			}
		}
		return ret;
	}
}
