void setup() {
  // put your setup code here, to run once:

}


//const int lysdiode=2;

void loop() {
  // put your main code here, to run repeatedly:
for (int i=2; i<5; i++)
{

  pinMode(i, OUTPUT);

  digitalWrite(i, HIGH);  // turn the LED on 
  delay(100);                      // wait for a second
  digitalWrite(i, LOW);   // turn the LED off
  delay(400);
}
  delay(1000);               

}