
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;
	}
	

}
public class recycled {
    public static void main(String args[]) {
	java.util.Scanner s = new java.util.Scanner(System.in);
	int T = s.nextInt();
	for (int n = 1; n <= T; n++) 
	    System.out.println("Case #" + n + ": " + f(s.nextInt(), s.nextInt()));
    }

    public static int f(int a, int b) {
	String A = "" + a;
	String B = "" + b;
	java.util.HashSet<String> s = new java.util.HashSet<String>();

	for (int i = a; i <= b; i++) {
	    String I = "" + i;
	    for (int j = 1; j < I.length(); j++) {
		String x = I.substring(j) + I.substring(0, j);
		if (A.compareTo(x) <= 0 && B.compareTo(x) >= 0 && !I.equals(x))
		    if (x.compareTo(I) > 0) 
			s.add(x+":"+I);
		    else
			s.add(I+":"+x);
	    }
	}

	return s.size();
    }
}