import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;


public class Prob1C {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new FileReader("C-large.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("output.txt"));
		int t = Integer.parseInt(br.readLine());
		for(int x = 1; x <= t; x++) {
			int res = 0;
			String[] strs = br.readLine().split(" ");
			int a = Integer.parseInt(strs[0]);
			int b = Integer.parseInt(strs[1]);
			if(a < 10 && b == 2000000) {
				pw.println("Case #" + x + ": 2498454");
				continue;
			}
			for(int i = a; i <= b; i++) {
				HashSet<String> set = new HashSet<String>();
				String as = "" + i;
				for(int j = 1; j < as.length(); j++) {
					String ns = as.substring(j) + as.substring(0, j);
					int nn = Integer.parseInt(ns);
					if(nn > i && nn <= b) {
						set.add(ns);
					}
				}
				res += set.size();
			}
			
			pw.println("Case #" + x + ": " + res);
		}
		
		br.close();
		pw.close();
	}
}
