int r1 = 0;
int g1 = 1;
int b1 = 2;

void setup() {
  pinMode(r1, OUTPUT);
  pinMode(g1, OUTPUT);
  pinMode(b1, OUTPUT);
}

void loop() {
  digitalWrite(r1, LOW);
  digitalWrite(g1, LOW);
  digitalWrite(b1, LOW);

  digitalWrite(g1, HIGH);
  delay(5000);
  digitalWrite(g1, LOW);

  digitalWrite(r1, HIGH);
  delay(5000);
  digitalWrite(r1, LOW);

  digitalWrite(b1, HIGH);
  delay(5000);
  digitalWrite(b1, LOW);

  delay(3000);

  digitalWrite(b1, HIGH);
  delay(1000);
  digitalWrite(b1, LOW);

  digitalWrite(r1, HIGH);
  delay(1000);
  digitalWrite(r1, LOW);

  digitalWrite(g1, HIGH);
  delay(1000);
  digitalWrite(g1, LOW);

  delay(1000);
}