int Rpin1=4;
int Ypin1=3;
int Gpin1=2;
int Rpin2=7;
int Ypin2=6;
int Gpin2=5;
int Rpin3=10;
int Ypin3=9;
int Gpin3=8;
int Rpin4=11;
int Ypin4=12;
int Gpin4=13;

void setup() {
  // put your setup code here, to run once:
pinMode(2,OUTPUT) ;
pinMode(3,OUTPUT) ;
pinMode(4,OUTPUT) ;
pinMode(5,OUTPUT) ;
pinMode(6,OUTPUT) ;
pinMode(7,OUTPUT) ;
pinMode(8,OUTPUT) ;
pinMode(9,OUTPUT) ;
pinMode(10,OUTPUT) ;
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
}




void loop() {
  // put your main code here, to run repeatedly:
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);
digitalWrite(Rpin4, HIGH);
digitalWrite(Ypin4, LOW);
digitalWrite(Gpin4, 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);
digitalWrite(Rpin4, HIGH);
digitalWrite(Ypin4, LOW);
digitalWrite(Gpin4, 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);
digitalWrite(Rpin4, HIGH);
digitalWrite(Ypin4,LOW);
digitalWrite(Gpin4,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);
digitalWrite(Rpin4, HIGH);
digitalWrite(Ypin4, LOW);
digitalWrite(Gpin4, 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);
digitalWrite(Rpin4, HIGH);
digitalWrite(Ypin4, LOW);
digitalWrite(Gpin4, LOW);
delay(3000);
digitalWrite(Rpin1, HIGH); 
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, LOW);
digitalWrite(Ypin3, HIGH);
digitalWrite(Gpin3, LOW);
digitalWrite(Rpin4, LOW);
digitalWrite(Ypin4, HIGH);
digitalWrite(Gpin4, LOW);
delay(1000);
digitalWrite(Rpin1, HIGH);
digitalWrite(Ypin1, LOW);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, HIGH);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, LOW);
digitalWrite(Rpin4, LOW);
digitalWrite(Ypin4, LOW);
digitalWrite(Gpin4, HIGH);
delay(3000);
digitalWrite(Rpin1, LOW);
digitalWrite(Ypin1, HIGH);
digitalWrite(Gpin1, LOW);
digitalWrite(Rpin2, HIGH);
digitalWrite(Ypin2, LOW);
digitalWrite(Gpin2, LOW);
digitalWrite(Rpin3, HIGH);
digitalWrite(Ypin3, LOW);
digitalWrite(Gpin3, LOW);
digitalWrite(Rpin4, LOW);
digitalWrite(Ypin4, HIGH);
digitalWrite(Gpin4, LOW);
delay(1000);
}