void setup() {
  {pinMode(13, OUTPUT);}
  {pinMode(12, OUTPUT);}
  {pinMode(11, OUTPUT);}
  {pinMode(10, OUTPUT);}
  {pinMode(9, OUTPUT);}
  {pinMode(8, OUTPUT);}
  {pinMode(7, OUTPUT);}
  {pinMode(6, OUTPUT);}
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(13,HIGH);
  delay(1000);
  
  digitalWrite(11,HIGH);
  delay(1000);
  
  digitalWrite(9,HIGH);
  delay(1000);
  
  digitalWrite(7,HIGH);
  delay(1000);
  digitalWrite(13,LOW);
  delay(1000);
  
  digitalWrite(11,LOW);
  delay(1000);
  
  digitalWrite(9,LOW);
  delay(1000);
  
  digitalWrite(7,LOW);
  delay(1000);
  
  digitalWrite(12,HIGH);
  delay(2000);
  
  digitalWrite(10,HIGH);
  delay(2000);
  
  digitalWrite(8,HIGH);
  delay(2000);
  
  digitalWrite(6,HIGH);
  delay(2000);
  
  digitalWrite(12,LOW);
  delay(2000);
  
  digitalWrite(10,LOW);
  delay(2000);
  
  digitalWrite(8,LOW);
  delay(2000);
  
  digitalWrite(6,LOW);
  delay(2000);
  
  // put your main code here, to run repeatedly:

}