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.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class Main {
	public Scanner sc;
	public Map<Character, Character> mapping = new HashMap<Character, Character>();

	public static void main(String[] args) {
		Main m = new Main();
		m.start();
	}

	public void start() {
		sc = new Scanner(System.in);
		int t = sc.nextInt();
		for (int i = 1; i <= t; i++) {
			System.out.print("Case #" + i + ": ");
			solve();
		}
	}

	public void solve() {
		int a = sc.nextInt();
		int b = sc.nextInt();
		int ans = 0;
		Set<String> checked = new HashSet<String>();

		for (int n = a; n <= b; n++) {
			if (n < 10 || n == 1000) {
				continue;
			}

			char[] charArr = Integer.toString(n).toCharArray();

			if (charArr.length == 2) {
				if (charArr[1] != '0') {
					char[] newChar = { charArr[1], charArr[0] };
					int newInt = Integer.valueOf(String.valueOf(newChar));
					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
						checked.add(n + " " + newInt);
						ans++;
					}
				}
			} else if (charArr.length == 3) {
//				if (charArr[0] != '0') {
//					char[] newChar1 = { charArr[0], charArr[2], charArr[1] };
//					int newInt = Integer.valueOf(String.valueOf(newChar1));
//					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
//						checked.add(n + " " + newInt);
//						ans++;
//					}
//				}
				if (charArr[1] != '0') {
//					char[] newChar2 = { charArr[1], charArr[0], charArr[2] };
//					int newInt = Integer.valueOf(String.valueOf(newChar2));
//					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
//						checked.add(n + " " + newInt);
//						ans++;
//					}
					char[] newChar3 = { charArr[1], charArr[2], charArr[0] };
					int newInt = Integer.valueOf(String.valueOf(newChar3));
					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
						checked.add(n + " " + newInt);
						ans++;
					}
				}
				if (charArr[2] != '0') {
					char[] newChar4 = { charArr[2], charArr[0], charArr[1] };
					int newInt = Integer.valueOf(String.valueOf(newChar4));
					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
						checked.add(n + " " + newInt);
						ans++;
					}
//					char[] newChar5 = { charArr[2], charArr[1], charArr[0] };
//					newInt = Integer.valueOf(String.valueOf(newChar5));
//					if (!checked.contains(n + " " + newInt) && n < newInt && newInt >= a && newInt <= b) {
//						checked.add(n + " " + newInt);
//						ans++;
//					}
				}
			}
		}
		System.out.println(ans);
//		for (String string : checked) {
//			System.out.println(string);
//		}
//		System.out.println(checked.size());
	}
}
