
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}
package contest;

import java.io.BufferedReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Input {
	BufferedReader in;

	public Input(BufferedReader in) {
		this.in = in;
	}

	//

	public String readStr() {
		return readStr(in);
	}

	public int readInt() {
		return readInt(in);
	}

	public int[] readIntArr() {
		return readIntArr(in, " ");
	}

	public List<Integer> readIntList() {
		return readIntList(in, " ");
	}

	public List<String> readStrList() {
		return readStrList(in, " ");
	}

	//

	public String readStr(BufferedReader in) {
		try {
			return in.readLine();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	public int readInt(BufferedReader in) {
		return Integer.parseInt(readStr(in));
	}

	public int[] readIntArr(BufferedReader in) {
		return readIntArr(in, " ");
	}

	public int[] readIntArr(BufferedReader in, String delimiter) {
		String[] tokens = readStr(in).split(delimiter);
		int[] ints = new int[tokens.length];
		for (int i = 0; i < tokens.length; i++) {
			ints[i] = Integer.parseInt(tokens[i]);
		}
		return ints;
	}

	public List<Integer> readIntList(BufferedReader in) {
		return readIntList(in, " ");
	}

	public List<Integer> readIntList(BufferedReader in, String delimiter) {
		String[] tokens = readStr(in).split(delimiter);
		List<Integer> ints = new ArrayList<Integer>(tokens.length);
		for (int i = 0; i < tokens.length; i++) {
			ints.add(Integer.parseInt(tokens[i]));
		}
		return ints;
	}

	public List<String> readStrList(BufferedReader in, String delimiter) {
		return Arrays.asList(readStr(in).split(delimiter));
	}
}
