void setup() {
  DDRB = B00111111;  // -,-,13,12,11,10,9,8
}

void loop() {
/*  
  DDRB = B00111111;
  PORTB = B00000001;  // -,-,13,12,11,10,9,8
  delay(300);
  PORTB = PORTB << 1;
  delay(300);
  PORTB = PORTB << 1;
  delay(300);
  PORTB = PORTB << 1;
  delay(300);
  PORTB = PORTB << 1;
  delay(300);
  PORTB = PORTB << 1;
  delay(300);
*/

/*
  PORTB = B00000001;
  for (int i=1; i<=6; i++) {
    delay(300);
    PORTB = PORTB << 1;
  }
*/