int LEDred=4;
int LEDgreen=7;
int LEDblue=8;
void setup() {
  pinMode(LEDred, OUTPUT);
  pinMode(LEDgreen, OUTPUT);
  pinMode(LEDblue, OUTPUT);
  // put your setup code here, to run once:

}

void loop() {
digitalWrite(LEDred,HIGH);
delay(1000);
digitalWrite(LEDred, LOW);
delay(2000);
digitalWrite(LEDgreen,HIGH);
delay(1000);
digitalWrite(LEDgreen, LOW);
delay(2000);
digitalWrite(LEDblue,HIGH);
delay(1000);
digitalWrite(LEDblue, LOW);
delay(2000);
  // put your main code here, to run repeatedly:

}