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.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;

public class Recycle {

	// Method to Solve the Problem
	public void Solve(int c ,String a , String b){
		int first = Integer.parseInt(a);
		int second = Integer.parseInt(b);
		String test="";
		String convert;
		int num;
		int result=0;
		int result2=0;
		//		if(String.valueOf(b).length()==1){
		//			System.out.println("Case #"+c+": 0");
		//		}
		System.out.print("Case #"+c+": ");

		for (int i = first; i <= second; i++) {

			test=String.valueOf(i);
			if(test.length()==2){
				convert = test.charAt(1)+""+test.charAt(0);
				num = Integer.parseInt(convert);
				if(num<=second && num>=i && num!= i)
					result++;
			}	
			if(test.length()==3){
				convert = test.charAt(2)+""+test.charAt(0)+""+test.charAt(1);
				num = Integer.parseInt(convert);
				if(num<=second && num>=i && num!= i)
					result2++;
				convert = test.charAt(1)+""+test.charAt(2)+""+test.charAt(0);
				num = Integer.parseInt(convert);
				if(num<=second && num>=i && num!= i)
					result2++;
			}
		}
		result= (result) + (result2);
		System.out.println(result);
		//System.out.println(result2);

	}

	// Method to read from the file
	public void readFile() throws FileNotFoundException{
		int  iter=0;
		String s;
		try{
			FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			br.readLine();
			while ((s = br.readLine()) != null)   {
				String [] numbers = s.split(" ");
				Solve(++iter, numbers[0],numbers[1]);
			}
			in.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
	public static void main(String[] args) throws Exception {
		Recycle s = new Recycle();
		s.readFile();
	}
}
