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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;


public class RecycledNumbers {


	public static void main(String[] args) throws IOException {
		
		String inputName = "C-large";
		
		FileReader fr = new FileReader(inputName+".in");
		Scanner sc = new Scanner(fr);
		
		FileWriter fstream = new FileWriter(inputName+".out");
		BufferedWriter out = new BufferedWriter(fstream);
				
		int T = sc.nextInt();
		for(int i = 0; i < T; i++){
			int A = sc.nextInt();
			int B = sc.nextInt();
			int ans = 0;
			for(int n = A; n <= B; n++){
				String s = ""+n;
				ArrayList<Integer> mlist = new ArrayList<Integer>();
				for(int k = 1; k < s.length(); k++){
					String s2 = s.substring(k) + s.substring(0, k);
					int m = Integer.parseInt(s2);
					if(m > n && m <= B && !mlist.contains(m)){
						//System.out.println(s + " " + s2);
						ans++;
						mlist.add(m);
					}
				}
			}
			print(out, "Case #" + (i+1) + ": " + ans);
		}

		fr.close();
		out.close();
	}
	
	public static void print(BufferedWriter out, String s) throws IOException{
		out.write(s);
		out.newLine();
		System.out.println(s);
	}
}
