// John Carlo D. Martin  
// BSCPE4A

const int FirstLed = 3;
const int SecondLed = 4;
const int ThirdLed = 5;

void setup() {
  pinMode(FirstLed, OUTPUT);
  pinMode(SecondLed, OUTPUT);
  pinMode(ThirdLed, OUTPUT);
}

void loop() {
  for (int counter = 0; counter < 5; ++counter) {
    digitalWrite(FirstLed, HIGH);  
    delay(500);                    
    digitalWrite(FirstLed, LOW);   
    
    digitalWrite(SecondLed, HIGH); 
    delay(1000);                  
    digitalWrite(SecondLed, LOW);  
    
    digitalWrite(ThirdLed, HIGH);  
    delay(1000);                  
    digitalWrite(ThirdLed, LOW);   
  }
  
  
  delay(2000); 
}