int LED1=4;
int LED2=7;
int LED3=8;
int LED4=12;
int LED5=13;

void setup() {
  // put your setup code here, to run once:
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LED1, HIGH);
  delay(100);
  digitalWrite(LED2, HIGH);
  delay(100);
  digitalWrite(LED3, HIGH);
  delay(100);
  digitalWrite(LED4, HIGH);
  delay(100);
  digitalWrite(LED5, HIGH);
  delay(100);
  digitalWrite(LED1, LOW);
  delay(100);
  digitalWrite(LED2, LOW);
  delay(100);
  digitalWrite(LED3, LOW);
  delay(100);
  digitalWrite(LED4, LOW);
  delay(100);
  digitalWrite(LED5, LOW);
  delay(100);
  digitalWrite(LED5, HIGH);
  delay(100);
  digitalWrite(LED4, HIGH);
  delay(100);
  digitalWrite(LED3, HIGH);
  delay(100);
  digitalWrite(LED2, HIGH);
  delay(100);
  digitalWrite(LED1, HIGH);
  delay(100);
  digitalWrite(LED5, LOW);
  delay(100);
  digitalWrite(LED4, LOW);
  delay(100);
  digitalWrite(LED3, LOW);
  delay(100);
  digitalWrite(LED2, LOW);
  delay(100);
  digitalWrite(LED1, LOW);
  delay(100);
}