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;
	}

}

package codeJam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Iterator;

/**
 * http://code.google.com/codejam/contest/1460488/dashboard#s=p2
 * @author Weiwei Cheng
 */
public class RecycledNumbers {

    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new FileReader("_input.in"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("_output.in"));
        
        br.readLine();
        
        String line = null;
        int count = 0;
        
        while((line=br.readLine())!=null){
            int num = 0;
            String[] input = line.split(" ");
            int low = Integer.parseInt(input[0]);
            int high = Integer.parseInt(input[1]);
            
            for(int i=low; i<high; i++){
                int[] recnums = getRecycledNumbers(i);
                for(int j : recnums){
                    if(j<=high && j>=low && j>i){
                        num++;
                    }
                }
            }
            
            bw.append("Case #" + ++count + ": " + num);
            bw.newLine();
        }
        
        br.close();
        bw.close();

    }

    public static int[] getRecycledNumbers(int num){
        
        String str = Integer.toString(num);
        
        HashSet<Integer> set = new HashSet<Integer>();
        
        for(int i=0; i<str.length()-1; i++){
            int j = num / (int)(Math.pow(10, i+1));
            String s = str.subSequence(str.length()-i-1, str.length()) + "" + j;
            set.add(Integer.parseInt(s));
        }
        
        int[] ans = new int[set.size()];
        
        Iterator<Integer> itr = set.iterator();
        int i=0;
        while(itr.hasNext()){
            ans[i++] = itr.next();
        }
        
        return ans;
    }
    
}
