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.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;



public class Numbers {
	
	public static FileReader fr;
	public static BufferedReader br;
	public static FileWriter fw;
	public static BufferedWriter bw;
	
	
	public void read(String path) throws Exception
	{
		 fr = new FileReader(path);
		
		 br=new BufferedReader(fr);
	
	}
	
	
	public void write(String path) throws Exception
	{
		
	}
	
	public void execute(BufferedReader br,String path)throws Exception
	{
		
		String s;
		
		fw =new FileWriter(path,false);
		bw=new BufferedWriter(fw);
		s=br.readLine();	
		int i1=1;
		
		while((s=br.readLine())!=null)
		{
			int count =0;
			String st[]=s.split("\\s");
			int a=Integer.parseInt(st[0]);
			int b=Integer.parseInt(st[1]);
			
			
			
			for(int i=a;i<=b;i++)
			{
				int temp=i;
				String abc=Integer.toString(temp);
				int length=abc.length();
				int index=length-1;
				String tempString=abc;
				while(index>0)
				{
				
					String first=tempString.substring(0, index);
					String second=tempString.substring(index,length);
					abc=second+first;
					int newnumber=Integer.parseInt(abc);
					if((newnumber<=b && newnumber>temp )&& !abc.startsWith("0") && (Integer.toString(temp).length())==abc.length())
						count++;
					
					index--;
						
				}
			}
			
			bw.write("Case #"+ i1++ +": " +count +"\n");
			
			
			
			
		
		}
		bw.close();
		fr.close();
		
		
	}
	public static void main(String[] args) throws Exception
	
	{
		Numbers t=new Numbers();
		t.read("E:\\codejam\\Files\\A.in");
		t.execute(br,"E:\\codejam\\Files\\A.out");
	
		
	}

}
