import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;

public class RecycleNumber {
	public static void solution(String fileName) throws IOException {

		FileReader fileReader = new FileReader(new File(fileName));
		BufferedReader bufferedReader = new BufferedReader(fileReader);

		String textLine = bufferedReader.readLine();

		int lines = Integer.parseInt(textLine);
		int[] ret = new int[lines];
		for (int i = 0; i < lines; i++) {
			textLine = bufferedReader.readLine();
			String[] t = textLine.split(" ");
			if (t.length < 2) {
				ret[i] = 0;
				continue;
			}
			long start = Long.parseLong(t[0]);
			long end = Long.parseLong(t[1]);
			int c = 0;
			for (long j = start; j < end; j++) {
				if (start < 10)
					break;
				c += getNumber(Long.toString(j), start, end);
			}
			ret[i] = c;
		}
		for (int i = 0; i < ret.length; i++) {
			System.out.println("Case #" + (i + 1) + ": " + ret[i]);
		}
	}

	public static int getNumber(String n, long s, long e) {
		int ret = 0;
		String t = n;
		long lo = Long.parseLong(n);
		HashSet<String> map = new HashSet<String>();
		for (int i = 1; i < n.length(); i++) {
			t = n.substring(i) + n.substring(0, i);
			String ts = n+";"+t;
			if (map.contains(ts)) continue;
			else map.add(ts);
			long l = Long.parseLong(t);
			if (l <= e && l >= s && lo < l)
				ret++;
		}

		return ret;
	}

	public static void main(String[] args) throws Exception {
		solution("c:\\sql\\C-large.in");
	}
}
