int hijau1        =1;
int kuning1     =2;
int  merah1     =3;
int  merah2    =4;
int kuning2    =5;
int hijau2       =6;

void setup ()  {
 pinMode (hijau1, OUTPUT);
 pinMode (kuning1, OUTPUT);
 pinMode (merah1, OUTPUT);
 pinMode (merah2, OUTPUT);
 pinMode (kuning2, OUTPUT);
 pinMode (hijau2, OUTPUT);
 digitalWrite (merah2, HIGH);

}


void loop () {
//atas
 digitalWrite (hijau1, HIGH);
 digitalWrite (kuning1, LOW);
 digitalWrite (merah1, LOW);
 delay (5000);

 digitalWrite (hijau1, LOW);
 digitalWrite (kuning1, HIGH);
 digitalWrite (merah1, LOW);
 delay (2000);


 digitalWrite (hijau1, LOW);
 digitalWrite (kuning1, LOW);
 digitalWrite (merah1, HIGH);

//bawah
 digitalWrite (merah2, LOW);
 digitalWrite (kuning2, LOW);
 digitalWrite (hijau2, HIGH);
 delay (5000);

 digitalWrite (merah2, LOW);
 digitalWrite (kuning2, HIGH);
 digitalWrite (hijau2, LOW);
 delay (2000);

 digitalWrite (merah2, HIGH);
 digitalWrite (kuning2, LOW);
 digitalWrite (hijau2, LOW);

}