int Blanco =6;
int Verde1 =7;
int Amarillo =8;
int Rojo1 =9;
int Verde2 =10;
int Rojo2 =11;

void setup() {
  // put your setup code here, to run once:
pinMode(Blanco,OUTPUT);
pinMode(Verde1,OUTPUT);
pinMode(Amarillo,OUTPUT);
pinMode(Rojo1,OUTPUT);
pinMode(Verde2,OUTPUT);
pinMode(Rojo2,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(Blanco, HIGH);
delay(500);
digitalWrite(Blanco, LOW);
digitalWrite(Verde1, HIGH);
digitalWrite(Verde2, HIGH);
delay(500);
digitalWrite(Verde1, LOW);
digitalWrite(Verde2, LOW);
digitalWrite(Amarillo, HIGH);
delay(500);
digitalWrite(Amarillo, LOW);
digitalWrite(Rojo1, HIGH);
digitalWrite(Rojo2, HIGH);
delay(500);
digitalWrite(Rojo1, LOW);
digitalWrite(Rojo2, LOW);
}