void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
 
  for(int i = 1; i <= 50; i++){
    if(i % 5 == 0){
    
      Serial.println("dor");
    } else {
      Serial.println(i);
    }
  delay(300);
  }
}

void loop() {
  // put your main code here, to run repeatedly:

}