//Cortez, Shara Joy M.
//NW301
void setup()
{
  pinMode(9, OUTPUT); //red 10
  pinMode(8, OUTPUT); //yellow 3
  pinMode(7, OUTPUT); //green 12
  Serial.begin(9600); //serial monitor
}
void loop() 
{
  for (int green=12; green>=0; green--){
  digitalWrite(9, LOW);
  digitalWrite(8, LOW);
  digitalWrite(7, HIGH);
  Serial.print("Time Left:");
  Serial.print(green);
  Serial.println(" seconds");
  
  delay(1000);
  }
  for (int yellow=3; yellow>=0; yellow--){
  digitalWrite(9, LOW);
  digitalWrite(8, HIGH);
  digitalWrite(7, LOW);
  Serial.print("Time Left:");
  Serial.print(yellow);
  Serial.println(" seconds");
  
  delay(1000);
  } 
  for (int red=10; red>=0; red--){
  digitalWrite(9, HIGH);
  digitalWrite(8, LOW);
  digitalWrite(7, LOW);
  Serial.print("Time Left:");
  Serial.print(red);
  Serial.println(" seconds");

  delay(1000);
  }
}