import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

import java.io.*;
import java.util.*;
public class q3
{
	public static void main(String []args) throws IOException
	{
		
		
		 PrintWriter pw=new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
	   BufferedReader br=new BufferedReader(new FileReader("input.txt"));
		int arr[]=new int[2];
		int limit=Integer.parseInt(br.readLine());
		String x2;
		int count=0;
		for(int li=1;li<=limit;li++)
	   {count=0;
	   	   x2=br.readLine();
	   	      int j=0;
	   	   StringTokenizer st =new StringTokenizer(x2);
	   	   while (st.hasMoreElements()) {

              String token = st.nextElement().toString();
               arr[j]=Integer.parseInt(token);
                 j++;
           }
           
           for(int a1=arr[0];a1<=arr[1];a1++)
           { 
           	  String x1=String.valueOf(a1);
           	  int l=x1.length();
           	  String final1="";
           	  for(int x=1;x<=(l-1);x++)
		     	{
			
			      final1=x1.substring(l-x,l)+x1.substring(0,l-x);
			          int check=Integer.parseInt(final1);
			      if(a1<check&&check<=arr[1])
			      {
			      	      count++;
			        
			          }
			    }
           	  final1="";
           }    
            
	        pw.println("Case #"+li+": "+count);
	   
	   }
	    pw.close();
	}
}