#define OrangeLed 3
#define BlueLed 1
#define GreenLed 7

void setup() {
  pinMode(OrangeLed, OUTPUT);
  pinMode(BlueLed, OUTPUT);
  pinMode(GreenLed, OUTPUT);

}

void loop() {
 digitalWrite(OrangeLed, HIGH);
 delay(200);
 digitalWrite(OrangeLed, LOW);
delay(200);
digitalWrite(BlueLed, HIGH);
 delay(200);
 digitalWrite(BlueLed, LOW);
delay(200);
digitalWrite(GreenLed, HIGH);
 delay(200);
 digitalWrite(GreenLed, LOW);
delay(200);
delay(200);
}