import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		for (int ti = 0; ti < t; ti++) {
			int a = sc.nextInt(), b = sc.nextInt();
			int sum = 0;
			for (int i = a; i <= b; i++) {
				int numOfDigits, power;
				if (i < 10) {
					numOfDigits = 1;
					power = 1;
				} else if (i < 100) {
					numOfDigits = 2;
					power = 10;
				} else if (i < 1000) {
					numOfDigits = 3;
					power = 100;
				} else if (i < 10000) {
					numOfDigits = 4;
					power = 1000;
				} else if (i < 100000) {
					numOfDigits = 5;
					power = 10000;
				} else if (i < 1000000) {
					numOfDigits = 6;
					power = 100000;
				} else {
					numOfDigits = 7;
					power = 1000000;
				}
				int tmp = i;
				for (int j = 0; j < numOfDigits - 1; j++) {
					int leastSig = tmp % 10;
					tmp = power * leastSig + tmp / 10;
					if (tmp == i)
						break;
					if (leastSig != 0 && tmp < i && tmp >= a)
						sum++;
				}
			}
			System.out.printf("Case #%d: %d%n", ti + 1, sum);
		}
	}
}
