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.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Recycled {
	public void calc() {
		Scanner in = null;
		PrintStream out = null;
		try {
			// in = new Scanner(new File("./A-small-attempt3.in"));
			in = new Scanner(System.in);
			out = new PrintStream(new File("./out.txt"));
		} catch (Exception e) {
			System.err.println(e);
			System.exit(-1);
		}

		int lines = in.nextInt();
		in.nextLine();
		for (int i = 0; i < lines; i++) {
			out.print("Case #");
			out.print(i + 1);
			out.print(": ");
			int b = in.nextInt();
			int e = in.nextInt();
			in.nextLine();
			int count = 0;
			Set<String> set = new HashSet<String>();
			for (int j = b; j < e; j++) {
				set.clear();
				String s = Integer.toString(j);
				for (int c = 1; c < s.length(); c++) {
					String d = s.substring(c).concat(s.substring(0, c));
					int di = Integer.parseInt(d, 10);
					if (di > j && di <= e) {
						if (!set.contains(d)) {
							set.add(d);
							count++;
						}
					}
				}
			}
			out.print(count);
			out.print('\n');
		}
		out.flush();
		out.close();
		in.close();
	}

	public static void main(String[] args) {
		Recycled g = new Recycled();
		g.calc();
	}

}
