
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.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;

public class Permutation {

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(new File("Input"));
		PrintWriter out = new PrintWriter("Output");
		ArrayList<Integer> array2 = new ArrayList<Integer>();
		String length = in.nextLine();
		int c = 0;
		while (in.hasNext()) {
			c++;
			array2.add(in.nextInt());
			array2.add(in.nextInt());
			if (c < Integer.valueOf(length) - 1)
				in.nextLine();
		}

		int count = 0;
		array2.trimToSize();
		for (int q = 0; q < array2.size(); q += 2) {
			count++;

			int dd1 = array2.get(q);
			int dd2 = array2.get(q + 1);
			int res = 0;
			for (int i = dd1; i < dd2; i++) {
				String td1 = String.valueOf(i);
				for (int j = i + 1; j <= dd2; j++) {
					String td2 = String.valueOf(j);
					ArrayList<Integer> kk = new ArrayList<Integer>();
					int k = 0;
					do {
						k = td2.indexOf(td1.charAt(0), k + 1);
						if (k >= 0)
							kk.add(k);
					} while (k >= 0);
					kk.trimToSize();
					HashSet<Integer> hs = new HashSet<Integer>();
					for (int w : kk) {
						k = w;
						if (k >= 0) {
							String rev2 = new StringBuffer(td2.substring(0, k))
									.reverse().toString();
							String rev1 = new StringBuffer(td2.substring(k))
									.reverse().toString();
							String rev = rev2 + rev1;
							String rev3 = new StringBuffer(rev).reverse()
									.toString();
							if (Integer.valueOf(rev3) == i){
								hs.add(j);
//								res++;
								//System.out.println(res + ": " + i + " | " + rev3 + " - rev: " + j);
							}
						}
					} res += hs.size();
				}
			}
			out.println("Case #" + count + ": " + res);
		}

		in.close();
		out.close();
	}

}
