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.ArrayList;
import java.util.List;

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

/**
 *
 * @author home
 */
public class RecycledNumbers {
      public static void main(String args[])throws IOException{
        FileReader reader = new FileReader("D:\\NetBeansProjects\\DBInteractionWithWS\\src\\java\\C-small-attempt0.in");
		BufferedReader br = new BufferedReader(reader);
		File file = new File("rloutput.txt");
		FileWriter fw = new FileWriter(file);
		int count = Integer.parseInt(br.readLine());
		for(int s=0;s<count;s++){
                   int recycledNumbers=0;
                   String str = br.readLine();
                   //System.out.println(str);
                   int start = Integer.parseInt(str.split(" ")[0]);
                   int end  = Integer.parseInt(str.split(" ")[1]);
                     for(int i=start;i<end;i++){
                         List<String> list = new ArrayList();
                         if(end<=10)
                             break;
                         else{
                         
                             if(i<=10)
                                 continue;
                             String temp1 = i+"";
                             for(int j=1;j<temp1.length();j++){
                                 
                                 String subString=temp1.substring(temp1.length()-j)+temp1.substring(0,temp1.length()-j);
                                 
                                if(!subString.startsWith("0"))
                                 if(!temp1.equals(subString)){
                                     
                                     if((i<Integer.parseInt(subString))&&(Integer.parseInt(subString)<=end)){
                       
                                          if(list.isEmpty()){
                                                                 //System.out.println(temp1+" : "+subString);
                                              list.add(subString);
                                              recycledNumbers++;
                                          }
                                          else if(!available(subString,list)) {
                                                                 //System.out.println(temp1+" : "+subString);
                                              list.add(subString);
                                              
                                            recycledNumbers++;
                                          }
                                     }
                                 }
                             }
                     
                        }
                     }
                     System.out.println("Case #"+(s+1)+": "+recycledNumbers);
                     
                     
                }
      }
      public static boolean available(String str, List list){
          
          for(int i=0;i<list.size();i++){
              
                 //System.out.println((String)list.get(i));
              
              if(((String)list.get(i)).equals(str)){
                  
                  return true;
              }
          }
          
          return false;
      }
}
