const int blueLight = 11;
const int pinkLight = 10;
const int greenLight = 9;
const int yellowLight = 6;
const int violetLight = 5;
const int redLight = 4;
const int delayTime = 300;

void setup() {
 
 
  pinMode(blueLight, OUTPUT);
  pinMode(pinkLight, OUTPUT);
  pinMode(greenLight, OUTPUT);
  pinMode(yellowLight, OUTPUT);
  pinMode(violetLight, OUTPUT);
  pinMode(redLight, OUTPUT);

}

void loop() {
lightToTheRight();
lightToTheLeft();
spreadTheLight();  
turnOffAllLights();  
}

void spreadTheLight() {
 turnOnLight(greenLight);
 turnOnLight(yellowLight);
  delay(delayTime);
   turnOnLight(pinkLight);
   turnOnLight(violetLight);
  delay(delayTime);
  turnOnLight(redLight);
  turnOnLight(blueLight);
  delay(delayTime);
  
   turnOffLight(greenLight);
 turnOffLight(yellowLight);
  delay(delayTime);
   turnOffLight(pinkLight);
   turnOffLight(violetLight);
  delay(delayTime);
  turnOffLight(redLight);
  turnOffLight(blueLight);
  delay(delayTime);
}

void lightToTheLeft() {
  turnOffLight(redLight);
  delay(delayTime);
  turnOffLight(violetLight);
  delay(delayTime);
  turnOffLight(yellowLight);
  delay(delayTime);
  turnOffLight(greenLight);
  delay(delayTime);
  turnOffLight(pinkLight);
  delay(delayTime);
  turnOffLight(blueLight);
  delay(delayTime);

}
void lightToTheRight() {
  delay(delayTime);
  turnOnLight(blueLight);
  delay(delayTime);
  turnOnLight(pinkLight);
  delay(delayTime);
  turnOnLight(greenLight);
  delay(delayTime);
  turnOnLight(yellowLight);
  delay(delayTime);
  turnOnLight(violetLight);
  delay(delayTime);
  turnOnLight(redLight);
  delay(delayTime);
}
void turnOnLight(int pin) {
  digitalWrite(pin, HIGH);
}

void turnOffLight(int pin) {
  digitalWrite(pin, LOW);
}

void turnOffAllLights() {
  digitalWrite(blueLight, LOW);
  digitalWrite(pinkLight, LOW);
  digitalWrite(greenLight, LOW);
  digitalWrite(yellowLight, LOW);
  digitalWrite(violetLight, LOW);
  digitalWrite(redLight, LOW);
}