StreamOfLetters

import java.util.Arrays;
import java.util.Scanner;

public class SteamOfLetters {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String command = "";
        int counterC = 0;
        int counterO = 0;
        int counterN = 0;
        char nextLetter = 0;

        while (!command.equals("End")) {

            command = scanner.nextLine();

            if (command.equals("End")) {
                break;
            }
            nextLetter = command.charAt(0);
            if (nextLetter > 'a' && nextLetter < 'z' || nextLetter > 'A' && nextLetter < 'Z') {

                if (counterC < 1 && nextLetter == 'c') {
                    counterC++;
                    continue;
                } else if (counterO < 1 && nextLetter == 'o') {
                    counterO++;
                    continue;
                } else if (counterN < 1 && nextLetter == 'n') {
                    counterN++;
                    continue;
                }

                if (counterC == 1 && counterN == 1 && counterO == 1) {
                    System.out.print(" ");
                    counterC = 0;
                    counterN = 0;
                    counterO = 0;
                }
                System.out.print(nextLetter);
            }
        }
    }
}