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.io.*;
import java.util.Scanner;
public class jam3Rec {
	
	public static void main(String args[]) throws java.lang.Exception
	{
		
		int a,b,n,m, cnt=0,len=0;
		//a=1111;b=2222;
		int t,cas=1;
		//System.out.println();
		//Scanner scan=new Scanner(System.in);
    	//Scanner scan=new Scanner(new FileReader("input3" + ".in"));
		Scanner scan=new Scanner(new FileReader("C-small-attempt2" + ".in"));
		
		PrintWriter out=new PrintWriter("SmallOutput5" + ".out");
		//PrintWriter out=new PrintWriter("LocalOutput3" + ".out");
		
		//FileReader("A-small-attempt1" + ".in")
		t=scan.nextInt();
		while(t!=0)
		{
		t--;
		cnt=0;
		a=scan.nextInt();
		b=scan.nextInt();
		
		//a=100;b=500;
		String str1,tstr1;
		
		for(int i=a;i<=b;i++)
		{
			str1=Integer.toString(i);
			for(int j=a;j<=b;j++)
			{
				if(i!=j && i<j)
				{
					len=str1.length();
					for(int k=1;k<len;k++)
					{
						tstr1=str1.substring(0,len-k);
						tstr1=str1.substring(len-k)+tstr1 ;
						
						if(tstr1.equals(Integer.toString(j)))
						{
							k=len;
							//System.out.println(i+"  "+"  "+j+"  "+tstr1);
							cnt++;
						}
						
						
						
					}
					
					
				}
				
				
			}
		}
		//cnt=cnt/2;
	
		System.out.println("Case #"+cas+": "+cnt);
		out.println("Case #"+cas+": "+cnt);
		cas++;
		
		
		}
	
	//in.close();
	out.close();
	}

}
