#define LED1 4
#define LED2 5
#define LED3 12
#define LED4 13
#define LED5 14
#define LED6 15
#define LED7 16
#define LED8 17
#define LED9 18
#define LED10 19
#define LED11 21
#define LED12 22
#define LED13 23
#define LED14 25
#define LED15 26
#define LED16 27
#define LED17 2
#define LED18 33
void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  pinMode(LED6, OUTPUT);
  pinMode(LED7, OUTPUT);
  pinMode(LED8, OUTPUT);
  pinMode(LED9, OUTPUT);
  pinMode(LED10, OUTPUT);
  pinMode(LED11, OUTPUT);
  pinMode(LED12, OUTPUT);
  pinMode(LED13, OUTPUT);
  pinMode(LED14, OUTPUT);
  pinMode(LED15, OUTPUT);
  pinMode(LED16, OUTPUT);
  pinMode(LED17, OUTPUT);
  pinMode(LED18, OUTPUT);
  
}
void loop() {
  digitalWrite(LED1, HIGH);
  delay(500);
  digitalWrite(LED1, LOW);
  delay(500);
   digitalWrite(LED2, HIGH);
  delay(500);
  digitalWrite(LED2, LOW);
  delay(500);
   digitalWrite(LED3, HIGH);
  delay(500);
  digitalWrite(LED3, LOW);
  delay(500);
   digitalWrite(LED4, HIGH);
  delay(500);
  digitalWrite(LED4, LOW);
  delay(500);
   digitalWrite(LED5, HIGH);
  delay(500);
  digitalWrite(LED5, LOW);
  delay(500);
   digitalWrite(LED6, HIGH);
  delay(500);
  digitalWrite(LED6, LOW);
  delay(500);
   digitalWrite(LED7, HIGH);
  delay(500);
  digitalWrite(LED7, LOW);
  delay(500);
   digitalWrite(LED8, HIGH);
  delay(500);
  digitalWrite(LED8, LOW);
  delay(500);
   digitalWrite(LED9, HIGH);
  delay(500);
  digitalWrite(LED9, LOW);
  delay(500);
   digitalWrite(LED10, HIGH);
  delay(500);
  digitalWrite(LED10, LOW);
  delay(500);
   digitalWrite(LED11, HIGH);
  delay(500);
  digitalWrite(LED11, LOW);
  delay(500);
   digitalWrite(LED12, HIGH);
  delay(500);
  digitalWrite(LED12, LOW);
  delay(500);
   digitalWrite(LED13, HIGH);
  delay(500);
  digitalWrite(LED13, LOW);
  delay(500);
   digitalWrite(LED14, HIGH);
  delay(500);
  digitalWrite(LED14, LOW);
  delay(500);
   digitalWrite(LED15, HIGH);
  delay(500);
  digitalWrite(LED15, LOW);
  delay(500);
   digitalWrite(LED16, HIGH);
  delay(500);
  digitalWrite(LED16, LOW);
  delay(500);
   digitalWrite(LED17, HIGH);
  delay(500);
  digitalWrite(LED17, LOW);
  delay(500);
   digitalWrite(LED18, HIGH);
  delay(500);
  digitalWrite(LED18, LOW);
  delay(500);
}