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.Scanner;


public class recyclednumbers {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int numOfLines = Integer.parseInt(in.nextLine());
		for(int i = 0;i<numOfLines;i++)
		{
			String resultline = "Case #"+(i+1)+": "+readLine(in.nextLine());
			System.out.println(resultline);
		}
	}
	
	public static int checkNumber(int min,int max, int number)
	{
		String numberString = String.valueOf(number);
		HashMap<Integer,Integer> map = new HashMap<Integer, Integer>();
		int length = numberString.length();
		for(int i =1;i<length;i++)
		{
			int recycled = Integer.parseInt(numberString.substring(i,length)+numberString.substring(0,i));
			if(recycled > number&&recycled<=max)
			{
				map.put(recycled, 0);
			}
		}
		return map.size();
	}
	
	public static int checkRange(int start,int end)
	{
		int count = 0;
		for(int i = start;i<end;i++)
		{
			count += checkNumber(start, end, i);
		}
		return count;
	}
	
	public static String readLine(String line)
	{
		String[] pair = line.split(" ");
		int result = checkRange(Integer.parseInt(pair[0]),Integer.parseInt(pair[1]));
		return String.valueOf(result);
	}

}
