// NANDA RUSDINI XII.4


void setup() { 
 pinMode(4, OUTPUT);
pinMode(8, OUTPUT);
pinMode(12, OUTPUT);

}
 
void loop() {
digitalWrite(4, HIGH);
digitalWrite(8, LOW);
digitalWrite(12, LOW);
delay(2000);

digitalWrite(4, LOW);
digitalWrite(8, HIGH);
digitalWrite(12, LOW);
delay(2000);

digitalWrite(4, LOW);
digitalWrite(8, LOW);
digitalWrite(12, HIGH);
delay(3000);

digitalWrite(4, HIGH);
digitalWrite(8, HIGH);
digitalWrite(12, LOW);
delay(2000);

}