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();
	}
}

package codejam;

import java.io.*;
import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class RecycledNumbers {


    public static final String LINE_SEPARATOR = System.getProperty("line.separator");

    public static int recycleNum(int a, int b) {
        Map<Integer, Integer> map = new HashMap<Integer, Integer>();
        int n = String.valueOf(a).length();
        int c = 0;
        for (int i = a; i <= b; i++) {
            for (int j = 1; j < n ; j++) {
                int rNum = rotateRight(i, j);
                if (i < rNum && rNum <= b) {
                    if (!map.containsKey(rNum) || map.get(rNum) != i) {
                        map.put(rNum, i);
                        c++;
                    }
                }
            }
        }
        return c;
    }

    private static int rotateRight(int i, int j) {
        int length = String.valueOf(i).length();
        int sP = (int) Math.pow(10, j);
        int bP = (int) Math.pow(10, length - j);
        int rem = i % sP;
        return ((i - rem) / sP) + (rem * bP);
    }

    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(new File("D:\\codejam\\C-large.in"));
        Writer writer = new OutputStreamWriter(new FileOutputStream("D:\\codejam\\C-large.out"));
        Integer n = Integer.valueOf(scanner.nextLine());
        for (int i = 1; i <= n; i++) {
            System.out.println();
            int a = scanner.nextInt();
            int b = scanner.nextInt();
            writer.write("Case #" + i + ": " + recycleNum(a, b));
            writer.write(LINE_SEPARATOR);
        }
        scanner.close();
        writer.close();
    }

}
