import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

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

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Hossam Yasseen
 */
public class ProblemC {

	/**
	 * @param args
	 */
	static Integer startEdge , endEdge ;
	
	public static void main(String[] args) {
		
		int numberOfRecycledNumbers = 0;

		String[] result = null ;
		for (int counter0 = 1; counter0 < args.length; counter0++) {
			result = args[counter0].split("\\s");
			startEdge = Integer.parseInt(result[0]);
			endEdge = Integer.parseInt(result[1]);
			numberOfRecycledNumbers=0 ;
			
			for (int counterA = startEdge; counterA < endEdge; counterA++) {
				List<Integer> recycledNumber = recycledNumbers(counterA);
				for (int counter = 0; counter < recycledNumber.size(); counter++) {
					if (recycledNumber.get(counter) <= endEdge )
						numberOfRecycledNumbers++;
				}
			}
			System.out.println("Case #" + counter0 + ": "
					+ numberOfRecycledNumbers);
		}
	}

	private static List<Integer> recycledNumbers(Integer number) {

		Map<Integer,String> map = new HashMap<Integer, String>();
		String dummyValue = null ;
		String candidateNumber = "";

		char[] characters = number.toString().toCharArray();

		int index;
		for (int counter = 0; counter < characters.length; counter++) {
			index = counter ;
			int loops = 0 ;
			candidateNumber="";
			
			for ( ; loops < characters.length; index++) {
				candidateNumber += characters[index % characters.length];
				loops++ ;
			}
			
			if(Integer.parseInt(candidateNumber)>number.intValue())
				map.put(Integer.parseInt(candidateNumber),dummyValue);
			
		}
		
		List<Integer> recycledNumber =  new ArrayList<Integer>( map.keySet());
		return recycledNumber;
	}
}
