void setup() {
  Serial.begin(9600);
  pinMode(8,OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);

}

void loop() {
  
   
    // digitalWrite(9, LOW);
    // digitalWrite(10, LOW);
    // delay(1000);

    // digitalWrite(9, HIGH);
    // digitalWrite(10, LOW);
    // delay(1000);

    // digitalWrite(9, LOW);
    // digitalWrite(10, HIGH);
    // delay(1000);

    // digitalWrite(10, HIGH);
    // digitalWrite(9, HIGH);
    // delay(1000);
      Serial.print(" ");
      Serial.println("Stop");
      digitalWrite(8, LOW);
      digitalWrite(9, LOW);
      digitalWrite(10, HIGH);
      delay(1000);

       for( int n = 10; n >= 1 ; n-- )
      {
      Serial.print(" ");
      Serial.print(n);
      delay(1000);
      }

      digitalWrite(10, LOW);
      digitalWrite(9, HIGH);
      digitalWrite(8, LOW);
      delay(1000);
      Serial.print(" ");
      Serial.println("Ready");
      for( int n = 10; n >= 1 ; n-- )
      {
      Serial.print(" ");
      Serial.print(n);
      delay(1000);
      }
      Serial.print(" ");
      Serial.println("GO");
      digitalWrite(9, LOW);
      digitalWrite(8, HIGH);
      digitalWrite(10, LOW);
      delay(1000);

      for( int n = 10; n >= 1 ; n-- )
      {
      Serial.print(" ");
      Serial.print(n);
      delay(1000);
      }
}