int s[] ={15,2,4,5,18,21,19,22};
void setup() {
  
  

pinMode(s[5], OUTPUT);
pinMode(s[6], OUTPUT);
pinMode(s[1], OUTPUT);
pinMode(s[2], OUTPUT);
}

void loop() {


  digitalWrite(s[5], HIGH);
  digitalWrite(s[6], HIGH);
  digitalWrite(s[1], HIGH);
  digitalWrite(s[2], HIGH);
  delay(10); // this speeds up the simulation
}