const int ledPins[] = {12, 14, 27, 26, 25, 33, 32, 2};
int cont=0;
void setup() {
  for(int i=0; i<8; i++)
  {
  pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {

if(cont<8){
digitalWrite(ledPins[cont], HIGH);
delay(100);
digitalWrite(ledPins[cont], LOW);
delay(100);
cont=cont+1;
}else {
  cont=0;
}
}