int oneSecondInMilliseconds = 1000;
int startPin = 2;
void setup() {
 pinMode(2, OUTPUT);
 pinMode(4, OUTPUT);
 pinMode(6, OUTPUT);

}

void loop() {
  digitalWrite(startPin, HIGH);
  delay(oneSecondInMilliseconds+oneSecondInMilliseconds);
  digitalWrite(startPin, LOW);
  delay(oneSecondInMilliseconds);
  digitalWrite(startPin+startPin, HIGH);
  delay(oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds);
  digitalWrite(startPin+startPin, LOW);
  delay(oneSecondInMilliseconds);
  digitalWrite(startPin+startPin+startPin, HIGH);
  delay(oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds+oneSecondInMilliseconds);
  digitalWrite(startPin+startPin+startPin, LOW);
  delay(oneSecondInMilliseconds);
 // put your main code here, to run repeatedly:

}