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 me.adrabi.codejam;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

/**
 * @author Adrabi Abderrahim, z3vil
 *
 */
public class P3
{
	public static void main(String[]$) throws NumberFormatException, IOException
	{
		List<String> recycled = new ArrayList<String>();
		{
			BufferedReader reader = new BufferedReader( new InputStreamReader(new FileInputStream("p3")));
			int count = Integer.parseInt(reader.readLine());
			
			String line = null;
			while((line = reader.readLine()) != null)
			{
				recycled.add(line);
			}
		}
		
		int currentLine = 1;
		for(String line : recycled)
		{
			String numbers[] = line.split(" ");
			if(numbers.length > 1)
			{
				Map<String, Integer> tmp = new TreeMap<String, Integer>();
				
				int a = Integer.parseInt(numbers[0]), b = Integer.parseInt(numbers[1]), count = 0;
				
				for(int index = a ; index <= b; index++)
				{
					String array[] = (index+"").split("");
					
					if(isSimilare(array))
					{
						continue;
					}
					
					List<String> elements = toList(array);
					
					int steps = array.length - 2;
					while(steps >= 1)
					{
						String element = elements.get(elements.size() - 1);
						elements.remove(elements.size() - 1);
						elements.add(0, element);
						steps--;
						
						String number = toString(elements);
						if(number.startsWith("0"))
						{
							continue;
						}
						else if(number.endsWith("00"))
						{
							continue;
						}
						else
						{
							int testNumber = Integer.parseInt(number);
							if( index < testNumber && testNumber <= b )
							{
								if(tmp.containsKey(number))
								{
									tmp.put(number, tmp.get(number) + 1);
								}
								else
								{
									tmp.put(number, 1);
								}
								if(tmp.get(number) < 4)
								{
									count++;
								}
							}
						}
					}
				}
				
				System.out.printf("Case #%d: %d\n", currentLine++, count);
			}
			else
			{
				System.out.printf("Case #%d: 0\n", currentLine++);
			}
		}
		
		
	}
	
	private static boolean isSimilare(String[]array)
	{
		String lastElement = array[1];
		boolean check = true;
		for(int start = 2; start < array.length; start++)
		{
			if(!lastElement.equals(array[start]))
			{
				check = false;
				break;
			}
			lastElement = array[start];
		}
		return check;
	}
	
	private static String toString(List<String> list)
	{
		String str = "";
		for(String tmp : list)
		{
			str += tmp;
		}
		return str;
	}
	
	private static List<String> toList(String array[])
	{
		List<String> list = new ArrayList<String>();
		for(int start = 1; start < array.length; start++)
		{
			list.add(array[start]);
		}
		return list;
	}
}
