int led1  =  1;
int led2  =  2;
int led3  =  3;
int led4  =  4;
int led5  =  5;
int led6  =  6;

void setup ()
{
  pinMode (led1,  OUTPUT );
  pinMode (led2 ,  OUTPUT);
  pinMode (led3 ,  OUTPUT);
  pinMode (led4 ,  OUTPUT);
  pinMode (led5 ,  OUTPUT);
  pinMode (led6 ,  OUTPUT);
}

void loop( )
{
  digitalWrite(led1 ,  HIGH);
  digitalWrite(led2 ,  HIGH);
  digitalWrite(led3 ,  HIGH);
  digitalWrite(led4 ,  HIGH);
  digitalWrite(led5 ,  HIGH);
  digitalWrite(led6 ,  HIGH);
  delay (120);

  digitalWrite(led1 ,  LOW);
  digitalWrite(led2 ,  LOW);
  digitalWrite(led3 ,  LOW);
  digitalWrite(led4 ,  LOW);
  digitalWrite(led5 ,  LOW);
  digitalWrite(led6 ,  LOW);
  delay (120);
}