void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  for (int i=0;i<25;i++){
digitalWrite(13, HIGH);
delay(100);
digitalWrite(13, LOW);
delay(100);
}
delay(2000);
for (int i=0;i<50;i++){
digitalWrite(12, HIGH);
delay(100);
digitalWrite(12, LOW);
delay(100);
}
delay(2000);
for (int i=0;i<75;i++){
digitalWrite(11, HIGH);
delay(100);
digitalWrite(11, LOW);
delay(100);
}
delay(2000);
}