void setup() {
  pinMode(1,OUTPUT) ;
  pinMode(2,OUTPUT) ;
  pinMode(3,OUTPUT) ;
  pinMode(4,OUTPUT) ;
  pinMode(5,OUTPUT) ;
  pinMode(6,OUTPUT) ;
  pinMode(7,OUTPUT) ;
  pinMode(8,OUTPUT) ;
  pinMode(9,OUTPUT) ;
  pinMode(11,OUTPUT) ;
  pinMode(12,OUTPUT) ;
  pinMode(13,OUTPUT) ;
  
  
  
}

void loop() {
  while(true){
  digitalWrite(1,1);
  digitalWrite(6,1);
  digitalWrite(9,1);
  digitalWrite(13,1);
  delay(2000);
  digitalWrite(6,0);
  digitalWrite(5,1);
  delay(2000) ;
  digitalWrite(1,0);
  digitalWrite(5,0) ;
  digitalWrite(4,1);
  digitalWrite(3,1);
  delay(2000);
  digitalWrite(9,0);
  digitalWrite(8,1);
  delay(2000) ;
  digitalWrite(4,0);
  digitalWrite(8,0) ;
  digitalWrite(7,1);
  digitalWrite(6,1);
  delay(2000);
  digitalWrite(13,0);
  digitalWrite(12,1);
  delay(2000) ;
  digitalWrite(12,0);
  digitalWrite(7,0) ;
  digitalWrite(9,1);
  digitalWrite(11,1);
  delay(2000) ;
  digitalWrite(1,0);
  digitalWrite(2,0) ;
  digitalWrite(3,0);
  digitalWrite(4,0) ;
  digitalWrite(5,0);
  digitalWrite(6,0) ;
  digitalWrite(7,0);
  digitalWrite(8,0) ;
  digitalWrite(9,0);
  digitalWrite(11,0) ;
  digitalWrite(13,0);
  digitalWrite(12,0) ;

  }
}