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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.ArrayList;


public class ProblemB {

	public static void main(String[] args) throws IOException {
		BufferedReader bf = new BufferedReader(new FileReader("C-small-attempt0.in"));
		System.setOut(new PrintStream("salida"));

//		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
		String linea = bf.readLine();
		int casos = Integer.parseInt(linea);
		int cont = 1;
		while(casos>0){
			linea = bf.readLine();
			String[] nums = linea.split(" ");
			int result = 0;
			int a = Integer.parseInt(nums[0]);
			int b = Integer.parseInt(nums[1]);
			
			for (int i = a; i <=b; i++) {
				int actual = i;
				ArrayList<Integer> transpuestos = trasponer(actual);
				result+=generarParejas(actual, b,transpuestos);
			}
			System.out.println("Case #"+cont+": "+result);
			cont++;
			casos--;
		}
	}


	private static int generarParejas(int actual, int b, ArrayList<Integer> lista) {
		int cont = 0;
		for (int i = actual+1; i <=b; i++) {
			if(lista.contains(i))
				cont++;
		}
		return cont;
	}


	private static ArrayList<Integer> trasponer(int actual) {
		String ini = actual+"";
		ArrayList<Integer> resp = new ArrayList<Integer>();
		for (int i = 0; i < ini.length()-1; i++) {
			String s = ini.substring(ini.length()-1-i)+ini.substring(0,ini.length()-1-i);
			resp.add(Integer.parseInt(s));
		}
		return resp;
	}
}