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.io.*;

public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			FileInputStream fstream = new FileInputStream("CProblem/C-small-attempt2.in");
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));

			FileWriter fwstream = new FileWriter("CProblem/Cout.txt");
			BufferedWriter out = new BufferedWriter(fwstream);

			String strLine = br.readLine();
			int n = 0;
			int A, B;
			RecycledNumbers recycledNumbers = new RecycledNumbers();
			if (strLine != null) {
				n = Integer.parseInt(strLine);
				System.out.println(n);
			}
			// Read File Line By LIN
			for (int i = 0; i < n; i++) {
			if ((strLine = br.readLine()) != null) {
				String[] numbers = strLine.split(" ");
				A = Integer.parseInt(numbers[0]);
				B = Integer.parseInt(numbers[1]);
				int count = recycledNumbers.calculate(A, B);
				out.write("Case #"+(i+1)+": "+count+'\n');
			}
		}
			// Close the input stream
			in.close();
			out.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

	private int calculate(int A, int B) {
		int count = 0;
		int n,m;
		for (int i = A; i <= B; i++) {
			String num1 = String.valueOf(i);
			//String num2 = String.valueOf(B);
			String str="";
			 n = Integer.parseInt(num1);
			if (num1.length() == 1) {
				return 0;
			}
			switch (num1.length()) {
			case 4:
				str = num1.charAt(num1.length() - 1) + num1.substring(0, 3);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				str = num1.substring(2, 4) + num1.substring(0, 2);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				str = num1.substring(1, 4) + num1.charAt(0);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				break;
			case 3:
				str = num1.charAt(num1.length() - 1) + num1.substring(0, 2);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				str = num1.substring(1, 3) + num1.charAt(0);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				break;
			case 2:
				str = num1.charAt(num1.length() - 1) + num1.substring(0, 1);
				m = Integer.parseInt(str);
				count = check(count, A, n, m, B);
				break;
			default:
				break;
			}
		}
		return count;

	}
	public int check(int count, int A, int n, int m, int B) {
		if (A <= n && n < m && m <= B) {
			count++;
		}
		return count;
	}

}
