void setup() {
  pinMode(12,OUTPUT);
  pinMode(17,OUTPUT);
  pinMode(15,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(0,OUTPUT);

}

void loop() {
  digitalWrite(12,HIGH); 
  digitalWrite(1,HIGH); 
  digitalWrite(15,LOW); 
  digitalWrite(2,HIGH); 
  digitalWrite(0,LOW); 

  delay(1000);
  digitalWrite(12,LOW); 
  digitalWrite(17,LOW); 
  digitalWrite(15,HIGH); 
  digitalWrite(2,LOW); 
  digitalWrite(0,HIGH); 

  delay(1000);
}