int Rpin1 = 2;
int Ypin1 = 3;
int Gpin1 = 4;
int Rpin2 = 5;
int Ypin2 = 6;
int Gpin2 = 7;
int Rpin3 = 8;
int Ypin3 = 9;
int Gpin3 = 10;


void setup() {
  // put your main code here, to run repeatedly:
pinMode(Rpin1, OUTPUT);
pinMode(Ypin1, OUTPUT);
pinMode(Gpin1, OUTPUT);
pinMode(Rpin2, OUTPUT);
pinMode(Ypin2, OUTPUT);
pinMode(Gpin2, OUTPUT);
pinMode(Rpin3, OUTPUT);
pinMode(Ypin3, OUTPUT);
pinMode(Gpin3, OUTPUT);
}
void loop() {
digitalWrite(Rpin1, LOW);
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, HIGH);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, HIGH);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, LOW);
delay(3000);
digitalWrite(Rpin1, LOW);
digitalWrite(Ypin1, HIGH);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2,LOW);
digitalWrite(Ypin2, HIGH);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, HIGH);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, LOW);
delay(1000);
digitalWrite(Rpin1, HIGH);
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, LOW);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, HIGH);
digitalWrite(Rpin3, HIGH);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, LOW);
delay(3000);
digitalWrite(Rpin1, HIGH);
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, LOW);
digitalWrite(Ypin2, HIGH);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, LOW);
digitalWrite(Ypin3, HIGH);
digitalWrite(Gpin3, LOW);
delay(1000);
digitalWrite(Rpin1, HIGH);
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, LOW);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, HIGH);
delay(3000);
digitalWrite(Rpin1, LOW);
digitalWrite(Ypin1, HIGH);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, LOW);
digitalWrite(Ypin3, HIGH);
digitalWrite(Gpin3, LOW);
delay(1000);
}