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.util.*;
import java.io.*;
public class c{
	public static void main(String[] args)throws IOException{
		Scanner br = new Scanner(new File("c.in"));
		PrintWriter out = new PrintWriter(new File("c.out"));
		int cases = br.nextInt();
		for(int i = 0;i<cases;i++){
			int a = br.nextInt();
			int b = br.nextInt();
			
			int count = 0;
			for(int j = a;j<=b;j++){
				String cur = Integer.toString(j);
				HashSet<String> seen = new HashSet<String>();
				for(int k = 1;k<cur.length();k++){
					String temp = cur.substring(k, cur.length())+cur.substring(0, k);
					if(!seen.contains(temp)){
						seen.add(temp);
						int num = Integer.parseInt(temp);
						if(num <= j || num < a || num > b){
							continue;
						
						}
						count++;
					}
				}
			}
			out.println("Case #"+(i+1)+": "+count);
		}
		out.close();
	}

}
