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.*;
public class trie
{
    public static void main(String[] args)throws IOException
    {
     int i,j,a,b,n,ans;
        String s1="",p1="";
        solver h1=new solver();
        Scanner fin=new Scanner(new File("A.txt"));
        s1=fin.nextLine();
        n=Integer.parseInt(s1);
        FileWriter fstream=new FileWriter("out.txt");
        BufferedWriter out=new BufferedWriter(fstream);
        for(i=0;i<n;i++)
        {
            s1="";
            j=0;
            s1=fin.nextLine();
            out.write("Case #");
            out.write(Integer.toString(i+1));
            out.write(": ");
            while(s1.charAt(j)!=' ')
            {
                p1=p1+s1.charAt(j);
                j++;
            }
            a=Integer.parseInt(p1);
            p1="";
            j++;
            while(j<s1.length())
            {
                p1=p1+s1.charAt(j);
                j++;
            }
            b=Integer.parseInt(p1);
            p1="";
            ans=h1.solve(a,b);
            out.write(Integer.toString(ans));
            out.write("\n");
        }
        out.close();
        
    }
    
}
