
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.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Learn {
	static void one(Object s) {
		System.out.print("Object");
	}

	static void one(List s) {
		System.out.print("String");
	}

	public static void main(String[] s) throws IOException {
		// one(null);
		FileInputStream fstream = new FileInputStream("q.txt");
		// Get the object of DataInputStream
		DataInputStream in = new DataInputStream(fstream);
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		String strLine;
		// Read File Line By Line
		int tc;
		tc = Integer.parseInt(br.readLine());
		for (int o = 0; o < tc; o++) {
			String line = br.readLine();
			int n = Integer.parseInt(line.split(" ")[0]);
			int m = Integer.parseInt(line.split(" ")[1]);
			int res = 0;
			String s1, s2 = null;
			List l = new ArrayList();
			for (int i = n + 1; i <= m; i++) {
				s1 = Integer.toString(i);

				for (int j = 1; j < s1.length(); j++) {
					String s3 = s1.substring(0, j);
					String s4 = s1.substring(j, s1.length());
					String s5 = s4 + s3;
					if (s5.indexOf("0") == 0)
						continue;
					int y = Integer.parseInt(s5);
					String va = i + "&" + y;
					if (l.contains(va))
						continue;
					l.add(va);
					if (y != i && y <= m && y >= n) {
						res++;
						
					}
				}
			}
			
			System.out.println("Case #" + (o+1) + ": "+ res / 2);
			// Close the input stream
			in.close();

		}
	}
}
