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.*;


public class RecycledNumbers {

	private static final Scanner sc = new Scanner(System.in);
	/**
	 * @param args
	 */
	public static void main(String[] args) {

		int T = sc.nextInt();
		
		
		for (int i = 0; i < T; i++){
			
			int A = sc.nextInt();
			int B = sc.nextInt();
			
			int m;
			
			HashMap<Integer, Integer> mMap = new HashMap<Integer, Integer>();

			int results = 0;
			
			final int digits = 1 + (int)Math.floor(Math.log10(A));
			
			
			for (int n = A; n < B; n++){
				
				if (digits == 1)
					break;
				
				//System.out.println(n);
					
				m = flipNumber(n, 1);
				mMap.put(m, m);
				
				if (n < m && m <= B)
						results++;
				
				if (digits > 2){
					m = flipNumber(n, 2);
					if (n < m && m <= B && !mMap.containsKey(m)){
						mMap.put(m,	m);
						results++;
					}
				}
				
				
				if (digits > 3){
					m = flipNumber(n, 3);
					if (n < m && m <= B && !mMap.containsKey(m)){
						mMap.put(m,	m);
						results++;
					}
				}
				
				mMap.clear();

				
			}
			System.out.println("Case #" + (i + 1) + ": " + results);

			
		}

	}
	
	private static int flipNumber(int x, int way){
		
		String num = "" + x;
		
		if (way == 1)
			num = num.substring(num.length() - 1) + num.substring(0, num.length() - 1);
		
		else if (way == 2)
			num = num.substring(num.length() - 2) + num.substring(0, num.length() - 2);
		
		else if (way == 3)
			num = num.substring(num.length() - 3) + num.substring(0, num.length() - 3);

		int p = Integer.parseInt(num);
		return p;
		
	}

}
