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.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(new File("data/C-large.in"));
		PrintWriter out = new PrintWriter(new File("data/output.txt"));

		Integer count = sc.nextInt();
		System.out.println(count);

		for (int i = 0; i < count; i++) {
			System.out.println(i);
			out.println("Case #" + (i + 1) + ": "
					+ countRecycled(sc.nextInt(), sc.nextInt()));
		}

		out.close();
	}

	private static int countRecycled(Integer iA, Integer iB) {
		Set<String> recycled = new HashSet<String>();
		if (iA.toString().length() != iB.toString().length()) {
			return 0;
		}

		System.out.println();
		System.out.println(iA + " " + iB);
		System.out.println();
		int sLength = iA.toString().length();

		for (Integer n = iA; n <= iB; n++) {

			for (int c = 1; c <= sLength; c++) {
				String left = n.toString().substring(sLength - c, sLength);
				String right = n.toString().substring(0, sLength - c);
				String newNumber = left + right;
				// System.out.println(left + "-" + right + "-" + newNumber);
				int intNew = Integer.parseInt(newNumber);
				if (!newNumber.startsWith("0") // same length
						&& intNew <= iB // within range
						&& intNew > n // bigger than the other one
				) {
					recycled.add(n.toString() + "," + newNumber);
				}

			}
		}

		return recycled.size();
	}
}
