#define wred 2
#define sred 17 
#define ered 19 

#define wyellow 4
#define syellow 5 
#define eyellow 21

#define wgreen 16
#define sgreen 18
#define egreen 22

//Define LED pins :array
//const int redPins[] = {wred,sred,ered};
//const int redPins[] = {wyelow,syelow,eyelow};
//const int redPins[] = {wgreen,sgreen,egreen};

void setup() {
  // put your setup code here,to run once:
  Serial.begin(115200);
  Serial.println("UJI COBA TRAFFIC LIGHT");
  Serial.println("==========");
  pinMode(wred, OUTPUT);
  pinMode(wyellow, OUTPUT);
  pinMode(wgreen, OUTPUT);
  pinMode(sgreen, OUTPUT);
  pinMode(syellow, OUTPUT);
  pinMode(sred, OUTPUT);
  pinMode(egreen, OUTPUT);
  pinMode(eyellow, OUTPUT);
  pinMode(ered, OUTPUT);
}
void loop() {
  //west logic 1
 digitalWrite(wgreen, HIGH); 
 digitalWrite(wyellow, LOW);
 digitalWrite(wred, LOW);

 digitalWrite(sgreen, LOW);
 digitalWrite(syellow, LOW);
 digitalWrite(sred, HIGH);

 digitalWrite(egreen, LOW);
 digitalWrite(eyellow, LOW);
 digitalWrite(ered, HIGH);
 delay(4000);
 //logic 2
 digitalWrite(wgreen, LOW);
 digitalWrite(wyellow, HIGH);
 digitalWrite(wred, LOW);

 digitalWrite(sgreen, HIGH);
 digitalWrite(syellow, LOW);
 digitalWrite(sred, LOW);

 digitalWrite(egreen, LOW);
 digitalWrite(eyellow, LOW);
 digitalWrite(ered, HIGH);
 delay(2000);

 digitalWrite(wgreen, LOW);
 digitalWrite(wyellow, LOW);
 digitalWrite(wred, HIGH);

 digitalWrite(sgreen, LOW);
 digitalWrite(syellow, HIGH);
 digitalWrite(sred, LOW);

 digitalWrite(egreen, HIGH);
 digitalWrite(eyellow, LOW);
 digitalWrite(ered, LOW);
 delay(4000);
 }