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.HashSet;
import java.util.Scanner;

public class problemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner cin = new Scanner(System.in);
		int t = cin.nextInt(), a, b, c, i, ten, len, q, j = 0, ans, ts, k = 0;
		while (t > 0) {
			t--;
			k++;
			ten = 1;
			len = 1;
			a = cin.nextInt();
			b = cin.nextInt();
			c = a;
			ans = 0;
			while (c > 9) {
				c /= 10;
				ten *= 10;
				len++;
			}
			HashSet<Integer> hash = new HashSet<Integer>();
			for (i = a; i <= b; i++) {
				if (!hash.contains(i)) {
					hash.add(i);
					ts = 1;
					j = i;
					for (q = 0; q < len; q++) {
						j = (j % ten) * 10 + j / ten;
						if (j >= a && j <= b && !hash.contains(j)) {
							ts++;
							hash.add(j);
						}
					}
					ans += ts * (ts - 1) / 2;
				}
			}
			System.out.println("Case #" + k + ": " + ans);
		}
	}
}
