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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ProblemC{
	
	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader br = new BufferedReader(new FileReader("C-large.in"));
		int count = Integer.parseInt(br.readLine());
		for (int i = 0; i<count; i++){
			String text = br.readLine();
			int result = calculate(text);
			System.out.println("Case #"+(i+1)+": "+result);
		}
		

	}

	private static int calculate(String text) {
		// TODO Auto-generated method stub
		int result = 0;
		String[] values = text.split(" ");
		long a = Long.parseLong(values[0]);
		long b = Long.parseLong(values[1]);
		for(long i = a; i < b; i++)
		{
			String nText = (new Long(i)).toString();
			List<Long> list = new ArrayList<Long>();
			for (int j = 1; j<nText.length();j++)
			{	
				String mText=nText.substring(j)+nText.substring(0,j);
				long m = Long.parseLong(mText);
				if(m>i && m<=b && !list.contains(m)){
					list.add(m);
					result++;
				}
			}
		}
		return result;
	}	
}