int RED = 7;
int YELL = 6;
int BLUE = 5;
int state = 0;
int count = 0;

void setup() {
  // put your setup code here, to run once:
  pinMode(RED, OUTPUT);
  pinMode(YELL, OUTPUT);
  pinMode(BLUE, OUTPUT);

}

void loop() {
  if (count < 3) {
    state = 0;
  } else if (count < 8) {
    state = 1;
  } else {
    state = 2;
  }

  flash();
}


void flash(){

  switch(state) {
    case (0):
      digitalWrite(RED,HIGH);
      delay(1000);
      digitalWrite(RED,LOW);
      delay(1000);
      count++;
      break;
    case (1):
      digitalWrite(YELL,HIGH);
      delay(1000);
      digitalWrite(YELL,LOW);
      delay(1000);
      count++;
      break;
    case (2):
      digitalWrite(BLUE,HIGH);
      delay(1000);
      digitalWrite(BLUE,LOW);
      delay(1000);
      count++;
    default:
      break;
  }

}