import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

package probs;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

public class Problem3 {

	public static void main(String[] args) {

		try {

			String filePath = "in-large-3.txt";

			List<String> input = readInput(filePath);
			int[] output = process(input);
			writeOutput(output);

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private static int[] process(List<String> input) {

		int[] result = new int[input.size()];
		int count = 0;
		for (String eachLine : input) {
			String[] split = eachLine.split(" ");
			String min = split[0];
			String max = split[1];

			int eachResult = processEachTestCase(min, max);
			result[count] = eachResult;

			count++;
		}

		return result;
	}

	private static int processEachTestCase(String min, String max) {

		int result = 0;

		int length = min.length();
		int minValue = Integer.parseInt(min);
		int maxValue = Integer.parseInt(max);

		if(minValue<maxValue){
			for (int x = minValue; x <= maxValue; x++) {
				// System.out.println("trying for " + x);
				Set<Integer> set = new HashSet<Integer>();
				// performing rotations on a number x
				for (int i = 0; i < length; i++) {
					int y = rotate(x, i, length);
					if (x < y && y <= maxValue) {
						if(!set.contains(y)){
							set.add(y);
							result++;
						}
						
					}
				}

			}
		}

		return result;
	}

	private static int rotate(int x, int i, int length) {

		int y;

		int temp = (int) Math.pow(10, i);

		int remainder = x % temp;
		y = x / temp;
		y = y + remainder * (int) (Math.pow(10, (length - i)));

		return y;
	}

	private static List<String> readInput(String filePath)
			throws FileNotFoundException {

		List<String> list = new ArrayList<String>();

		File file = new File(filePath);
		Scanner scanner = new Scanner(file);
		if (scanner.hasNextLine()) {
			String line = scanner.nextLine();
			int testCases = Integer.parseInt(line);
		}
		while (scanner.hasNextLine()) {
			String line = scanner.nextLine();
			// System.out.println(line);
			list.add(line);
		}

		return list;
	}

	private static void writeOutput(int[] list) {

		int n = list.length;

		for (int i = 0; i < n; i++) {
			System.out.println("Case #" + (i + 1) + ": " + list[i]);
		}
	}

}
