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.*;
import java.util.*;
class Replace
{
	public static void main(String args[])throws Exception
	{
		//Scanner sc = new Scanner(System.in);
		// PrintWriter pw = new PrintWriter(System.out);
		Scanner sc = new Scanner(new FileReader("C-small-attempt1.in"));
		//Console console=System.console(new FileReader("B-small-practice-1.in"));
		PrintWriter pw = new PrintWriter(new FileWriter("C-small-attempt1.out"));
		int ntest = sc.nextInt();
		//int a=100;
		//int b=500;
		
		for(int k=1;k<=ntest;k++)
		{
		int sum=0;
		int count=0;
		//int a=Integer.parseInt(sc.next());
		//int b=Integer.parseInt(sc.next());
		int a=sc.nextInt();
		int b=sc.nextInt();
		
		for(int i=a;i<=b;i++)
		{
				if(i>0 && i<100)
				{
					int rem=i%10;
					sum=rem*10+i/10;
					if(sum==i)
					{
					}
					else if(sum>=a && sum<=b)
					{
						count++;
						System.out.println(i);
						//System.out.println("garg");
					}
				}
				if(i>=100 && i<1000)
				{
					int rem=i%100;
					sum=rem*10+i/100;
					//System.out.println(i);
					
					if(sum==i)
					{
					}
					else if (sum>=a && sum<=b)
					{
						count++;
						//System.out.println(i);
					}
					//System.out.println("lucky");
					rem=i%10;
					sum=rem*100+i/10;
					if(sum==i)
					{
					}
					else if(sum>=a && sum<=b)
					{
						count++;
						//System.out.println(i);
						//System.out.println("garg");
					}
				}
					
					
				
		}
		pw.print("Case #" + k + ": ");
		pw.print(count/2);
		pw.println();
		}
		pw.close();
		sc.close();
	}
}