void setup() {
  // put your setup code here, to run once:
  Serial1.begin(115200);
  Serial1.println("Hello, Raspberry Pi Pico!");
  pinMode(5,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  delay(1); // this speeds up the simulation
  digitalWrite(5, HIGH);
    digitalWrite(4, LOW);
      digitalWrite(3, LOW);
delay(1000);


  digitalWrite(5, HIGH);
    digitalWrite(4, HIGH);
      digitalWrite(3, LOW);
delay(1000);

digitalWrite(5, LOW);
    digitalWrite(4, LOW);
      digitalWrite(3, HIGH);
  delay(1000);
  digitalWrite(4, LOW);
delay(1000);

 digitalWrite(5, LOW);
    digitalWrite(4, HIGH);
      digitalWrite(3, LOW);
delay(500);

}