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.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Scanner;

public class MainClass {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(new File("C-large.in"));
		PrintWriter out = new PrintWriter(new File("RecycledNumbers.out"));

		int N = sc.nextInt();
		for (int i = 0; i < N; i++) {
			System.out.println("For case i: " + i);
			int A = sc.nextInt();
			int B = sc.nextInt();
			long count = 0;
			String s1 = "";
			for (int j = A; j <= B; j++) {
				s1 = "" + j;
				ArrayList<String> done = new ArrayList<String>();
				for (int k = 0; k < s1.length(); k++) {
					String tempS = s1;
					tempS = s1.substring(1) + s1.charAt(0);
					if (done.contains(tempS)) {
						continue;
					} else {
						s1 = tempS;
					}
					int temp = Integer.parseInt(s1);
					if ((temp < j) && (temp >= A) && (temp <= B)) {
						count++;
						done.add(s1);

					}

				}
			}
			out.println("Case #" + (i + 1) + ": " + count);
			System.out.println("**************");
		}
		out.close();

	}

}
