int premuto = 0;
void setup() {
 pinMode(5,INPUT);
 pinMode(13, OUTPUT);
 pinMode(12, OUTPUT);
 pinMode(11,OUTPUT);
Serial.begin(9600);
}
void loop() {
  delay(100);
  if(digitalRead(5)==1){
  premuto=premuto +1
  delay(500);
  }
  if(premuto=4){
    premuto=0;
}
Serial.println(premuto);
if (premuto==0);
digitalWrite(13,LOW);
digitalWrite(12,LOW);
digitalWrite(11,LOW);
}
if (premuto==1){
digitalWrite(13,HIGH);
}
if (premuto==2){
digitalWrite(12,HIGH);
}
if (premuto==3){
digitalWrite(11,HIGH);
}