int R=3, G=2, B=1;

void setup() {
  // initialize digital pin LED_BUILTIN asan output.

  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(R, HIGH);
  digitalWrite(G, HIGH);
  digitalWrite(B, HIGH);
  delay(1000); 

digitalWrite(R, HIGH);
digitalWrite(G, LOW);
digitalWrite(B, LOW);
delay(1000);


digitalWrite(R,LOW);
digitalWrite(G,HIGH);
digitalWrite(B,LOW);
delay(1000);

digitalWrite(R,LOW);
digitalWrite(G,LOW);
digitalWrite(B,HIGH);
delay(1000);

}