/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

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

public class RecycledNumbers {

	private static String solve(int A, int B) {
		int count = 0;
		final HashSet<Integer> seen = new HashSet<Integer>(10);
		for (int n = A; n < B; n++) {
			// Find number of decimal digits.
			int nTemp = n, digits = 0, unit = 1;
			while (nTemp > 0) {
				digits++;
				nTemp /= 10;
				unit *= 10;
			}
			unit /= 10;

			int m = n;
			seen.clear();
			for (int i = 1; i < digits; i++) {
				if (m % 10 == 0) {
					// Don't process because there will be a leading zero.
					m /= 10;
				} else {
					m = (unit * (m % 10)) + (m / 10);
					if (m > n && m <= B && !seen.contains(m)) {
						seen.add(m);
						count++;
					}
				}
			}
		}

		return "" + count;
	}

	public static void main(String[] args) throws FileNotFoundException {
		//String filename = "C-test.in";
		String filename = "C-small-attempt0.in";
		// String filename = "C-large.in";
		assert filename.endsWith(".in");
		Scanner in = new Scanner(new File(filename));
		Formatter out = new Formatter(new File(filename.replace(".in", ".out")));

		assert in.hasNext();
		int T = in.nextInt();
		in.nextLine();
		for (int t = 0; t < T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			String ans = solve(A, B);

			String result;
			if (t < T - 1)
				result = String.format("Case #%d: %s%n", t + 1, ans);
			else
				result = String.format("Case #%d: %s", t + 1, ans);
			out.format(result);
			System.out.format(result);
		}

		out.flush();
		out.close();
	}

}
