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 com.google;

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

public class RecycledNumbers {

	private static int numberOfRecycledPairsPossible(int a, int lowerLimit,
			int upperLimit) {
		int length = (a + "").length();
		if (length == 1) {
			return 0;
		}

		int[] digits = new int[length];
		int b = a;
		boolean isRecyclePossible = false;
		int temp = 0;
		;
		Set<String> set = new HashSet<String>();

		digits[length - 1] = b % 10;
		b /= 10;

		for (int i = length - 2; i >= 0; i--) {
			digits[i] = b % 10;
			b /= 10;
			if (digits[i] != digits[i + 1]) {
				isRecyclePossible = true;
			}
		}
		if (!isRecyclePossible) {
			return 0;
		}

		for (int i = 1; i < length; i++) {
			temp = 0;
			for (int j = i; j < length; j++) {
				temp = temp * 10 + digits[j];
			}
			for (int j = 0; j < i; j++) {
				temp = temp * 10 + digits[j];
			}
			if (temp <= upperLimit && temp >= lowerLimit && temp > a) {
				set.add(a + "" + temp);
			}
		}
		return set.size();
	}

	private static int getRecycledNumbers(int start, int end) {
		int count = 0;
		for (int i = start; i <= end; i++) {
			count += numberOfRecycledPairsPossible(i, start, end);
		}
		return count;
	}

	public static void main(String[] args) throws FileNotFoundException {
		File file = new File("d:\\codeJam\\Numbers\\test.txt");
		Scanner scanner = new Scanner(file);
		int t = scanner.nextInt();
		int count = 0;
		for (int i = 1; i <= t; i++) {
			count = getRecycledNumbers(scanner.nextInt(), scanner.nextInt());
			System.out.println("Case #" + i + ": " + count);
		}
	}
}
