void setup()
{ 
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(21, OUTPUT);
  pinMode(22, OUTPUT);       
  digitalWrite(2,1);
  digitalWrite(4,1);
  digitalWrite(5,1);
  digitalWrite(18,1);
  digitalWrite(19,1);
  digitalWrite(21,1);
  digitalWrite(22,1);
}
void loop()
{        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,0);
  digitalWrite(21,0);
  digitalWrite(22,1);
  delay(500);
        
  digitalWrite(2,1);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,1);
  digitalWrite(19,1);
  digitalWrite(21,1);
  digitalWrite(22,1);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,1);
  digitalWrite(18,0);
  digitalWrite(19,0);
  digitalWrite(21,1);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,1);
  digitalWrite(21,1);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,1);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,1);
  digitalWrite(19,1);
  digitalWrite(21,0);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,1);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,1);
  digitalWrite(21,0);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,1);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,0);
  digitalWrite(21,0);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,1);
  digitalWrite(19,1);
  digitalWrite(21,1);
  digitalWrite(22,1);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,0);
  digitalWrite(21,0);
  digitalWrite(22,0);
  delay(500);
        
  digitalWrite(2,0);
  digitalWrite(4,0);
  digitalWrite(5,0);
  digitalWrite(18,0);
  digitalWrite(19,1);
  digitalWrite(21,0);
  digitalWrite(22,0);
  delay(500);
}