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 C
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		int test = 1, cases = sc.nextInt();
		int a, b, curr, count;
		String aStr, bStr, num, shift;

		while(test <= cases)
		{
			count = 0;

			a = sc.nextInt();
			b = sc.nextInt();
			aStr = Integer.toString(a);
			bStr = Integer.toString(b);

			for(curr = a; curr <= b; curr++)
			{
				num = Integer.toString(curr);
				shift = nextShift(num);

				while(!num.equals(shift))
				{
					if(shift.charAt(0) != '0' && aStr.compareTo(shift) <= 0 && bStr.compareTo(shift) >= 0 && num.compareTo(shift) < 0)
						count++;

					shift = nextShift(shift);
				}
			}

			System.out.println("Case #" + test + ": " + count);

			test++;
		}
	}

	public static String nextShift(String s)
	{
		if(s.length() <= 1)
			return s;
		else return s.substring(1, s.length()) + s.substring(0, 1);
	}
}