
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.Arrays;
import java.util.Scanner;


public class C {

	static Scanner in = new Scanner(System.in);

	long solve() {
		int A = in.nextInt();
		int B = in.nextInt();
		int digits = 1;
		int mult = 1;
		{
			int t = A;
			while (t>=10) {
				t/=10;
				++digits;
				mult *= 10;
			}
		}
		long ans = 0;
		int[] buf = new int[digits];
		for (int n=A; n<B; ++n) {
			int cnt = 0;
			int rot = n;
			for (int i=0; i+1<digits; ++i) {
				rot = rot/10 + (rot%10)*mult;
				if (rot > n && rot <= B) {
					buf[cnt++] = rot;
				}
			}
			if (cnt>0) {
				Arrays.sort(buf, 0, cnt);
				++ans;
				for (int i=1; i<cnt; ++i) {
					if (buf[i-1] != buf[i]) {
						++ans;
					}
				}
			}
		}
		return ans;
	}
	
	
	public static void main(String[] args) {
		int T = in.nextInt();
		for (int i=1; i<=T; ++i) {
			long ans = new C().solve();
			System.out.println("Case #" + i + ": " + ans);
		}

	}

}
