int hijau = 1;
int kuning = 2;
int merah = 3;
int merahs2 = 4;
int kunings2 = 5;
int hijaus2= 6;
void setup() {
  pinMode(hijau, OUTPUT);
  pinMode(kuning, OUTPUT);
  pinMode(merah, OUTPUT);
  pinMode(hijaus2, OUTPUT);
  pinMode(kunings2, OUTPUT);
  pinMode(merahs2, OUTPUT);

}
void loop() {
digitalWrite(merah, HIGH); 
digitalWrite(merahs2, HIGH); 
delay(1000);
digitalWrite(merah, LOW); 
digitalWrite(kuning, HIGH);
delay(2000);
digitalWrite(kuning, LOW);
digitalWrite(hijau, HIGH); 
delay(2000);
digitalWrite(hijau, LOW);
digitalWrite(kuning, HIGH);  
delay(2000);
digitalWrite(kuning, LOW); 
//lampu s2
digitalWrite(merah, HIGH);  
delay(1000);
digitalWrite(merahs2, LOW);
digitalWrite(kunings2, HIGH);
delay(2000);
digitalWrite(kunings2, LOW);
digitalWrite(hijaus2, HIGH); 
delay(2000);
digitalWrite(hijaus2, LOW);
digitalWrite(kunings2, HIGH);  
delay(2000);
digitalWrite(kunings2, LOW); 
digitalWrite(merahs2, HIGH); 
}