int ledPin[] = {13, 12, 11,10};
int ledDelay[4]={8000,4000,2000,1000};
// declare other required variables

void setup() {
  currTime =0;
  for(int i=0;i<4;i++){
    // initialize lastChangeTimes

    // set pin mode for ledPins
    
  }
}


void loop() {
  // implement the toggling logic
  
}