int led1_pin = 13;
 unsigned long currentTime,lastTime1,lastTime2,lastTime3,lastTime4,lastTime5,lastTime6,lastTime7,lastTime8;
 bool led1_state = LOW;
 int led2_pin = 12;
 bool led2_state = LOW;
 int led3_pin = 11;
 bool led3_state = LOW;
 int led4_pin =10;
 bool led4_state =LOW;
 int led5_pin =9;
 bool led5_state =LOW;
 int led6_pin =8;
 bool led6_state =LOW;
 int led7_pin =7;
 bool led7_state =LOW;
 int led8_pin =6;
 bool led8_state =LOW;

  

 void setup() {
  // put your setup code here, to run once:
  pinMode(led1_pin, OUTPUT);
  pinMode(led2_pin,OUTPUT);
  pinMode(led3_pin, OUTPUT);
  pinMode(led4_pin, OUTPUT);
  pinMode(led5_pin, OUTPUT);
   pinMode(led6_pin, OUTPUT);
  pinMode(led7_pin, OUTPUT);
  pinMode(led8_pin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  currentTime = millis();
  

  


  if(currentTime - lastTime1>900){
    led1_state = !led1_state;
    lastTime1 = currentTime;
  }

  if(currentTime - lastTime2 > 788){
    led2_state = !led2_state;
    lastTime2 = currentTime;
  }
  if(currentTime - lastTime3> 456){
    led3_state = ! led3_state;
    lastTime3 = currentTime;
  }
  if(currentTime - lastTime4 >388){
    led4_state = !led4_state;
    lastTime4 = currentTime;
  }
   if(currentTime - lastTime5>789){
    led5_state =!led5_state;
    lastTime5 = currentTime;
   }
   if(currentTime - lastTime6> 400){
    led6_state = !led6_state;
    lastTime6 = currentTime;
   }
   if(currentTime - lastTime7> 567){
    led7_state = !led7_state;
    lastTime7 = currentTime;
   }
    if(currentTime - lastTime8>678 ){
    led8_state = !led8_state;
    lastTime8 = currentTime;
   }

  digitalWrite(led1_pin, led1_state);
  digitalWrite(led2_pin, led2_state);
  digitalWrite(led3_pin, led3_state);
  digitalWrite(led4_pin, led4_state);
  digitalWrite(led5_pin, led5_state);
  digitalWrite(led6_pin, led5_state);
   digitalWrite(led7_pin, led5_state);
  digitalWrite(led8_pin, led5_state);


}