package codejam;

import java.util.*;
import java.io.*;

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;

public class C {
	public static int factorial(int x) {

		int fact = 1;

		for (int i = 2; i <= x; i++) {

			fact *= i;

		}
		return fact;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
//		Scanner s = null;
//		try {
//			s = new Scanner(new FileInputStream("s.in"));
//		} catch (FileNotFoundException e) {
//			// TODO Auto-generated catch block
//			e.printStackTrace();
//		}
		int lines = s.nextInt();
		for (int i = 1 ; i <= lines ;i++){
			int A = s.nextInt();
			int B = s.nextInt();
			HashSet<Integer> h = new HashSet<Integer>();
			for (int j  = A;j<=B;j++){
				h.add(j);
			}
			
			int comb = 0;
			for (int j  = A;j<=B;j++){
				if (!h.remove(j)){
					continue;
				}
				int len = (int)Math.log10(j);
				int c = 1;
				int newj = j;
				for (int k = 0; k < len;k++){
					newj = newj/10 + (newj % 10)*((int)Math.pow(10, len));
					if (h.remove(newj)){
						
						c++;
					}
				}
				if (c !=1){
					comb += factorial(c)/(factorial(c-2)*2);
				}
				
			}
			System.out.printf("Case #%d: %d\n",i,comb);
		}
	}
}
