// ORDER -> RED - BLUE - GREEN

int RED = 11;
int GREEN = 10;
int BLUE = 9;

void setup() {
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
}

void loop() {
  blink_red(500);
  blink_blue(500);
  blink_green(500);
}

void blink_red(int delay_value) {
    digitalWrite(RED, HIGH);
//    digitalWrite(GREEN, LOW);
//    digitalWrite(BLUE, LOW);
    delay(delay_value);
    digitalWrite(RED, LOW);
//    digitalWrite(GREEN, LOW);
//    digitalWrite(BLUE, LOW);
    delay(delay_value);
}

void blink_green(int delay_value) {
//    digitalWrite(RED, LOW);
    digitalWrite(GREEN, HIGH);
//    digitalWrite(BLUE, LOW);
    delay(delay_value);
//    digitalWrite(RED, LOW);
    digitalWrite(GREEN, LOW);
//    digitalWrite(BLUE, LOW);
    delay(delay_value);
}

void blink_blue(int delay_value) {
//    digitalWrite(RED, LOW);
//    digitalWrite(GREEN, LOW);
    digitalWrite(BLUE, HIGH);
    delay(delay_value);
//    digitalWrite(RED, LOW);
//    digitalWrite(GREEN, LOW);
    digitalWrite(BLUE, LOW);
    delay(delay_value);
}