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.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Scanner;

public class C {
	static int[] tens = { 1, 10, 100, 1000, 10000, 100000, 1000000 };

	static HashSet<Integer> set = new HashSet<Integer>();

	static private int countPairs(int a, int max, int len) {
		int rhs, lhs, num;
		set.clear();
		int res = 0;
		for (int i = 1; i < len; i++) {
			lhs = a % tens[i];
			rhs = a / tens[i];
			if (lhs == 0)
				continue;
			num = lhs * tens[len - i] + rhs;
			if (set.contains(num))
				continue;

			if (a < num && num <= max) {
				res++;
				set.add(num);
			}
		}
		return res;
	}

	static private int numberLength(int n) {
		int len = Arrays.binarySearch(tens, n);
		if (len < 0)
			len = ~len;
		else
			len++;
		return len;
	}

	public static void main(String[] args) throws IOException {
		Scanner in = new Scanner(new FileInputStream("C-small-attempt0.in"));
		FileWriter out = new FileWriter(new File("C-small-attempt0.out"));
		int t = in.nextInt(),cnt = 1;
		while (t-->0) {
			int a = in.nextInt(), b = in.nextInt();
			int tmp = 0;
			for (int i = a; i <= b; i++)
				tmp += countPairs(i, b, numberLength(i));
			out.write("Case #" + cnt++ + ": " + tmp+"\n");
		}
		in.close();
		out.close();
	}
}
