
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;
	}
	

}
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;


/**
 * @author Paul LaMotte
 *
 */
public class RecycledNumbers {

	public static void main(String[] args) {
		Scanner in;
		try {
			System.setOut(new PrintStream(new File("qualC.out")));
			in = new Scanner(new File("C-small-attempt0.in"));
			int lines = Integer.parseInt(in.nextLine());
			for (int i = 0; i < lines; i++) {
				int start = in.nextInt();
				int end = in.nextInt();
				
				int count = 0;
				for (int j = start; j <= end; j++) {
					int digits = 0;
					int num = j;
					while (num != 0) {
						digits++;
						num /= 10;
					}
					int tmp = j;
					int e = (int)Math.pow(10, digits - 1);
					HashSet<Integer> set = new HashSet<Integer>();
					for (int k = 0; k < digits - 1; k++) {
						int front = tmp % 10;
						tmp /= 10;
						tmp += front * e;
						if (tmp > j && tmp <= end && !set.contains(tmp)) {
							count++;
							set.add(tmp);
						}
					}
				}
				
				
				System.out.printf("Case #%d: %d\n", i + 1, count);
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}
