import java.util.Scanner;
import java.util.Arrays;
 
public class Main {
    public static void main(String[] args) {
        String[] m = new String[8];
        Scanner in = new Scanner(System.in);
        System.out.println("Enter 8 words");
        for (int i = 0; i < 8; i++) {
            m[i] = in.nextLine();
        }
 
        Arrays.sort(m);
 
        int k = 0;
        for (int i = 0; i < 7; i++) {
            if (m[i].equals(m[i + 1])) {
                k++;
            }
        }
        System.out.println("k=" + k);
    }
}

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b25lCnR3bwpvbmUKdHdvCnRocmVlCnNpeAplaWdodApuaW5lCg==

one
two
one
two
three
six
eight
nine