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 google.codejam2012.qualification;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class RecycledNumbers {
	
	static private int getDigitsCount(int number) {
		int sh = 10;
		int digits = 1;
		while (sh <= number) {
			sh *= 10;
			digits++;
		}
		return digits;
	}
	
	static private int getRecyclingPairsCount(int number, int limit) {
		int digits = getDigitsCount(number);
		int sh = 1;
		for (int i = 1; i < digits; i++) {
			sh *= 10;
		}
		int permutation = number;
		int result = 0;
		int[] usedNumbers = new int[digits];
		int usedNumbersCount = 0;
		for (int i = 1; i < digits; i++) {
			permutation = (permutation % 10) * sh + (permutation / 10);
			if (number < permutation & permutation <= limit) {
				boolean isNumberAlreadyUsed = false;
				for (int j = 0; j < usedNumbersCount; j++) {
					if (usedNumbers[j] == permutation) {
						isNumberAlreadyUsed = true;
						break;
					}
				}
				if (!isNumberAlreadyUsed) {
					usedNumbers[usedNumbersCount++] = permutation;
					result++;
				}
			}
		}
		return result;
	}
	
	static public void main(String[] args) {
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in), 64 << 10);
			int testsNumber = Integer.parseInt(br.readLine().trim());
			for (int test = 1; test <= testsNumber; test++) {
				StringTokenizer tokenizer = new StringTokenizer(br.readLine());
				int startingNumber = Integer.parseInt(tokenizer.nextToken());
				int endingNumber = Integer.parseInt(tokenizer.nextToken());
				int result = 0;
				for (int number = startingNumber; number <= endingNumber; number++) {
					result += getRecyclingPairsCount(number, endingNumber);
				}
				System.out.println("Case #" + test + ": " + result);
			}
		}
		catch (Exception e) {
			System.err.println("Error:" + e.getMessage());
		}
	}
}
