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.io.*;
public class Tester
{
    public static void main(String[]args) throws IOException
    {
        Scanner sc = new Scanner(new File("C-small-attempt1.in"));
        int intNum = sc.nextInt();
        sc.nextLine();
                String[] first = new String[intNum];
        String[] second =new String[intNum];
        for(int i =0;i<intNum;i++)
        {
            first[i] =sc.next();
            second[i]=sc.next();
        }

        int recycle = 0;
        //Loop through each set of numbers
        for(int i = 0;i<intNum;i++)
        {
            //List of recycled numbers
                    ArrayList recycled = new ArrayList();
            recycle = 0;
            //Get the first and second number.
            int firstNum = Integer.parseInt(first[i]);
            int secondNum = Integer.parseInt(second[i]);
            //LOOP THROUGH THE FIRST TO SECOND NUM
            for(int j = firstNum;j<secondNum+1;j++)
            {
                //GET THE CURRENT NUMBER
                String temp = Integer.toString(j);
                //LOOP THROUGH EACH DIGIT
                for(int k = 0;k<temp.length();k++)
                {
                    //GET THE SUBSTRING OF IT AND APPEND IT TO THE BEGINNING
                    String append = temp.substring(k+1);
                    append +=temp.substring(0,k+1);
                    //CHECK FOR LEADING 0'S
                    if(append.charAt(0)!='0')
                    {
                        //GET THE ACTUAL NUMERIC NUMBER
                    int appendNum = Integer.parseInt(append);
                    //Switched number in the range
                    if(appendNum<=secondNum)
                    {
                        //Check if it is lower than tested numbers
                        if(appendNum>j)
                        {
                            //If it is  greater than the first number

                            recycle++;recycled.add(append);
                        }
                    }
                }
            }
            }
            System.out.println("Case #" + (i+1) + ": " + recycle);
        }
    }
}
