package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.*;

import java.lang.*;

class RotateNumber {   
	public static long RotateNumber(long number, long A, long B)
	{
		long start = number;
		long sum = 0;
		int numdigits = (int) Math.log10((double)number); // would return numdigits - 1
		int multiplier = (int) Math.pow(10.0, (double)numdigits);
		while(true)
		{
			long q = number / 10;
			long r = number % 10;
			number = number / 10;
			number = number + multiplier * r;
			if(number == start)
				break;
			if (start < A) break;
			if (start >= A && start < number && number <= B) {
				sum++;
			}
		}
		return sum;
	}
	public static void main(String[] args) throws IOException {

		FileInputStream fstream = new FileInputStream("/tmp/codejam/A-small-practice.in");
		//DataInputStream in = new DataInputStream(fstream);
		BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
		PrintWriter out = new PrintWriter(new File("/home/peeyushk/tmp/output.ou"));
		String strLine;
		strLine = br.readLine().trim();
		int test = Integer.parseInt(strLine);
		for (int i=0;i<test;i++) {
			strLine = br.readLine().trim();
			long count = 0;
			String[] strings = strLine.split(" ");
			long A = Integer.parseInt(strings[0].trim());
			long B = Integer.parseInt(strings[1].trim());
			for (long num = A; num <= B; num++) {
				count = count + RotateNumber(num, A, B);
			}
			int k = i+1;
			out.println("Case #" + k + ": " + count);
		}
		out.flush();
		out.close();
		br.close();
	}
}