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.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;

public class prob2 {
	public static void main(String[] args) {
		BufferedReader inputStream = null;
		try {
			inputStream = new BufferedReader(new FileReader(
					"C:/Users/vpamarty.SYMPHONY/Downloads/C-large.in"));
			String lineRead = inputStream.readLine();

			int noCases = Integer.valueOf(lineRead).intValue();
			for (int i = 0; i < noCases; i++) {
				lineRead = inputStream.readLine();
				String[] splitString = lineRead.split(" ");
				int numA = Integer.valueOf(splitString[0]).intValue();
				int numB = Integer.valueOf(splitString[1]).intValue();

				int distinctRps = computeDisRps(numA, numB);
				System.out.println("Case #"+(i+1)+": "+distinctRps);
			}
			inputStream.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static int computeDisRps(int num1, int num2) {
		int numPairs = 0;
		for (int numCons = num1; numCons < num2; numCons++) {
			int numLength = (String.valueOf(numCons)).length();
			ArrayList<String> numArr = new ArrayList<String>();
			numArr.add(String.valueOf(numCons));
			for (int i = 1; i < numLength; i++) {
				String numString = String.valueOf(numCons);
				String newNumString = numString.substring(numLength - i)
						+ numString.substring(0, numLength - i);
				if (!numArr.contains(newNumString)) {
					numArr.add(newNumString);
					if (Integer.valueOf(newNumString).intValue() > numCons
							&& Integer.valueOf(newNumString).intValue() <= num2)
						numPairs++;
				}
			}
		}
		return numPairs;

	}
}
