secret paste for systems

int ENA = 10;
int IN1 = 9;
int IN2 = 8;

int ENB = 5;
int IN3 = 7;
int IN4 = 6;

void setup ()  {
  pinMode (ENA, OUTPUT);
  pinMode (ENB, OUTPUT);
  pinMode (IN1, OUTPUT);
  pinMode (IN2, OUTPUT);
  pinMode (IN3, OUTPUT);
  pinMode (IN4, OUTPUT);
}

  void forward ()  {
  digitalWrite (IN1, HIGH);
  digitalWrite (IN2, LOW);
  analogWrite (ENA, 128);
  digitalWrite (IN3, HIGH);
  digitalWrite (IN4, LOW);
  analogWrite (ENA, 128);
}

void backward ()  {
  digitalWrite (IN1, LOW);
  digitalWrite (IN2, HIGH);
  analogWrite (ENA, 128);
  digitalWrite (IN3, LOW);
  digitalWrite (IN4, HIGH);
  analogWrite (ENA, 128);
}

void turnLeft ()  {
  digitalWrite (IN1, HIGH);
  digitalWrite (IN2, LOW);
  analogWrite (ENA, 128);
  digitalWrite (IN3, LOW);
  digitalWrite (IN4, HIGH);
  analogWrite (ENA, 128);
}

void turnRight ()  {
  digitalWrite (IN1, LOW);
  digitalWrite (IN2, HIGH);
  analogWrite (ENA, 128);
  digitalWrite (IN3, HIGH);
  digitalWrite (IN4, LOW);
  analogWrite (ENA, 128);
}

void stopAll ()  {
  digitalWrite (IN1, LOW);
  digitalWrite (IN2, LOW);
  digitalWrite (IN3, LOW);
  digitalWrite (IN4, LOW);
}

void loop ()
{
   forward();
   delay(1500);
   stopAll();
   delay(100);
   turnLeft();
   delay(60);
   stopAll();
   delay(100);
   forward();
   delay(1500);
   stopAll();
   delay(10000);

}