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 Recycled;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;

public class recycled {

    static void print(int nbCases, int N, int S, int P, int[] T) {
	System.out.print(N + " ");
	System.out.print(S + " ");
	System.out.print(P);
	for (int j = 0; j < N; j++)
	{
	    System.out.print(" " + T[j]);
	}
	System.out.println();
    }

    static int RecycledNumbers(int A, int B) {
	int res = 0;
	double d = Math.log10(A);
	int n = (int) Math.floor(Math.log10(A)) + 1;
	// System.out.println(" A = " + A + "B = " + B);
	// System.out.println(" N = " + n + " pour d = " + d);
	int flag = 0;
	HashSet<Couple> l = new HashSet<Couple>();
	for (int i = A; i <= B; i++)
	{
	    for (int j = 1; j < n; j++)
	    {
		int p = (int) (((int) Math.pow(10, n - j)) *
		               (i % (int) Math.pow(10, j)) + i /
		                                             Math.pow(10, j));
		if (i < p && p >= A && p <= B && p / Math.pow(10, n) != 0 && !l.contains(new Couple(i, p)))
		{
		    flag += 1;
		    res += 1;
		    l.add(new Couple(i,p));
		    //if (flag >1)
		    //	System.out.println("FLAG");
		    //System.out.println(" Couple : (" + i + ", " + p + ")");
		}
		
	    }
	    flag = 0;
	}
	return res;
    }
    static void run(int A, int B, int turn) {
	System.out.println("Case #" + turn + ": " + RecycledNumbers(A, B));
    }

    /**
     * @param args
     * @throws FileNotFoundException
     */
    public static void main(String[] args) throws FileNotFoundException {
	Scanner f = new Scanner(
	        new File(
	                "C:\\Users\\Jean-Baptiste\\Desktop\\Info2A\\GoogleJam\\src\\Recycled.in"));
	int nbCases = f.nextInt();
	int A = 1;
	int B = 1;

	for (int i = 0; i < nbCases; i++)
	{
	    A = f.nextInt();
	    B = f.nextInt();

	    run(A, B, i + 1);
	}

	int n = 6;
	int i = 123456;
	int j = 4;
	int p = (int) (((int) Math.pow(10, n - j)) *
	               (i % (int) Math.pow(10, j)) + i / Math.pow(10, j));
	//System.out.println(" Pour i = 123456 et j = 3 : " + p);
	f.close();
    }

}
