const int led1=2, led2=3, led3=4, led4=5;
const int led5=6, led6=7, led7=8, led8=9;
const int led9=10, led10=11, led11=12, led12=A0;
const int led13=A1, led14=A2, led15=A3, led16=A4;
int jeda=40;

void setup(){
  for (int led=1; led<=18; led++){
    pinMode(led, OUTPUT);
  }
}

void loop(){
  mengalir();
  mengalir();
  mengalirkebalik();
  mengalirkebalik();
  memenuhi1();
  mengosongi1();
  memenuhi1();
  mengosongi1();
  memenuhi2();
  mengosongi2();
  memenuhi2();
  mengosongi2();
  mengisi1();
  matisemua();
  mengisi1();
  matisemua();
  kedippersatu();
  kedippersatu();
  
}

void mengalir(){
  for(int led=1; led<=18; led++){
    digitalWrite(led,HIGH);
    delay(jeda);
    digitalWrite(led,LOW);
    delay(jeda);
  }
}

void mengalirkebalik(){
  for(int led=18; led>=2; led--){
    digitalWrite(led,HIGH);
    delay(jeda);
    digitalWrite(led,LOW);
    delay(jeda);
  }
}

void memenuhi1(){
  for(int led=1; led<=18; led++){
    digitalWrite(led,HIGH);
    delay(jeda);
  }
}

void mengosongi1(){
  for(int led=1; led<=18; led++){
    digitalWrite(led,LOW);
    delay(jeda);
  }
}

void memenuhi2(){
  for(int led=18; led>=1; led--){
    digitalWrite(led,HIGH);
    delay(jeda);
  }
}

void mengosongi2(){
  for(int led=18; led>=1; led--){
    digitalWrite(led, LOW);
    delay(jeda);
  }
}

void mengisi1(){
  for(int led=1; led<=18; led++){
    digitalWrite(led,HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
  }
  digitalWrite(led16, HIGH);
  delay(jeda);

  for(int led=1; led<=17; led++){
    digitalWrite(led,HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
  }
  digitalWrite(led15,HIGH);
  delay(jeda);

  for(int led=1; led<=16; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
  }
  digitalWrite(led14, HIGH);
  delay(jeda);

  for(int led=1; led<=15; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
  }
  digitalWrite(led13,HIGH);
  delay(jeda);
  
  for(int led=1; led<=14; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
  }
  digitalWrite(led12,HIGH);
  delay(jeda);
  
  for(int led=1; led<=12; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led11,HIGH);
  delay(jeda);

  for(int led=1; led<=11; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led10,HIGH);
  delay(jeda);

  for(int led=1; led<=10; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led9,HIGH);
  delay(jeda);

  for(int led=1; led<=9; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led8,HIGH);
  delay(jeda);

  for(int led=1; led<=8; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led7,HIGH);
  delay(jeda);

  for(int led=1; led<=7; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led6,HIGH);
  delay(jeda);

  for(int led=1; led<=6; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led5,HIGH);
  delay(jeda);

  for(int led=1; led<=5; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led4,HIGH);
  delay(jeda);

  for(int led=1; led<=4; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led3,HIGH);
  delay(jeda);

  for(int led=1; led<=3; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led2,HIGH);
  delay(jeda);

  for(int led=1; led<=2; led++){
    digitalWrite(led, HIGH);
    delay(20);
    digitalWrite(led,LOW);
    delay(20);
   }
  digitalWrite(led1,HIGH);
  delay(jeda);

}

void matisemua(){
  for(int led=1; led<=18; led++){
    digitalWrite(led, LOW);
  }
}

void kedippersatu(){
  for (int led=1; led<=12; led++){
    digitalWrite(led, HIGH);
    delay(100);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led,HIGH);
    delay(100);
    digitalWrite(led,LOW);
    delay(100);
  }
  digitalWrite(led12,HIGH);
  delay(100);
  digitalWrite(led12,LOW);
  delay(100);
  digitalWrite(led12,HIGH);
  delay(100);
  digitalWrite(led12, LOW);
  delay(100);
  
  digitalWrite(led13, HIGH);
  delay(100);
  digitalWrite(led13,LOW);
  delay(100);
  digitalWrite(led13, HIGH);
  delay(100);
  digitalWrite(led13,LOW);
  delay(100);

  digitalWrite(led14, HIGH);
  delay(100);
  digitalWrite(led14,LOW);
  delay(100);
  digitalWrite(led14, HIGH);
  delay(100);
  digitalWrite(led14,LOW);
  delay(100);

  digitalWrite(led15, HIGH);
  delay(100);
  digitalWrite(led15,LOW);
  delay(100);
  digitalWrite(led15, HIGH);
  delay(100);
  digitalWrite(led15,LOW);
  delay(100);

  digitalWrite(led16, HIGH);
  delay(100);
  digitalWrite(led16,LOW);
  delay(100);
  digitalWrite(led16, HIGH);
  delay(100);
  digitalWrite(led16,LOW); 
}