
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.util.ArrayList;
import java.util.Scanner;


public class QuestionC extends Question{

	private int A;
	private int B;
	private int significant;
	private int digits;

	public QuestionC(Result result, Counter counter)
	{
		super(result, counter);
	}

	@Override
	public void readInput(Scanner scanner) {
		A = scanner.nextInt();
		B = scanner.nextInt();
		digits = Integer.toString(A).length();
		significant = (int)Math.pow(10, digits-1);
	}
	
	@Override
	public String solution() {
		int counter = 0;
		ArrayList<Integer> used = new ArrayList<Integer>();
		for (int i = A; i < B; i++) {
			int shifted = i;
			for (int j = 0; j < digits-1; j++) {
				shifted = (shifted%10)*significant+shifted/10;
				if (shifted > i && shifted <= B && !used.contains(shifted)) {
					counter++;
					used.add(shifted);
				}
			}
			used.clear();
		}
		return Integer.toString(counter);
	}


}
