import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class  Main  {
	
	//ArrayList<Integer> lis = new ArrayList<Integer>();
	//ArrayList<String> lis = new ArrayList<String>();
	//ArrayList<test> lis = new ArrayList<test>();
	static long sum=0;
	
public  static void main(String[] args) throws IOException {
   //googlein.txt
	Scanner sc =new Scanner(new File("C-small-attempt0.in"));
	  File file = new File("file.txt");
		PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
	//	sc.useDelimiter("(\\s)+|[,]");
		 int T=sc.nextInt();
		
	 	for(int k=1; k<=T; k++){
	 	 int c=0, a=sc.nextInt(),b =sc.nextInt();
	 	 
	 	 for(int t=a;t<=b;t++){
	 		String s=String.valueOf(t);
	 		
	 		int l=s.length(),g=1; 
	 		ArrayList<Integer> lis = new ArrayList<Integer>();
	 		for(int u=0;u<l;u++)g*=10; 
	 		
	 		for(int u=0,p=10;u<l-1;u++,p*=10){
	 		 //  int h= Integer.parseInt(s.substring(l-u-1,l-u));
	 			//if( h<1  )continue;
	 		   
	 			int e=(t%p)*(g/p),f=t/p,y=e+f;
	 			//db(t,y);
	 		  if( a<=y && y<=b && t<y && !lis.contains(y)){c++; lis.add(y);// db(t,y);
	 		  }	
	 			
	 			
	 	 }
	 
	 		
		 }
	 
	 	pw.println("Case #"+(k)+": "+c);
	 	}
	 	

	 	pw.flush();
	 	pw.close();  }



 

    static int ni(Scanner in){
	return in.nextInt();  
 }


    static void db(Object... os){
	         System.err.println(Arrays.deepToString(os));
 
	}

}
