int LedPin=10;
int LedPin_2 = 9;
int LedPin_3 = 8;
void setup() {
  // intialize sigital pin Led_Pin as an outpout.
  pinMode(LedPin, OUTPUT);
  pinMode(LedPin_2, OUTPUT);
  pinMode(LedPin_3, OUTPUT);

  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(LedPin,HIGH);
     
  digitalWrite(LedPin_2,HIGH); 
          
  digitalWrite(LedPin_3,HIGH); 
  delay(1000);  
                
  digitalWrite(LedPin,LOW);  // 
 
  digitalWrite(LedPin_2,LOW);  // 
  
  digitalWrite(LedPin_3,LOW);  // 
  delay(1000);

  digitalWrite(LedPin_3,HIGH); 
  delay(1000);  


  // put your main code here, to run repeatedly:

}