int led1=26;
int led2=27;
int led3=33;
int led4=14;
int led5=18;
int led6=19;
int led7=17;
int led8=5;

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);
}

void loop() {
  digitalWrite(led2, HIGH);
  digitalWrite(led1, LOW);
  digitalWrite(led3, HIGH);
  digitalWrite(led4, LOW);
  digitalWrite(led5, HIGH);
  digitalWrite(led6, LOW);
  digitalWrite(led7, HIGH);
  digitalWrite(led8, LOW);
  delay(5000);
  digitalWrite(led1,HIGH);
  digitalWrite(led2,LOW);
  digitalWrite(led3,LOW);
  digitalWrite(led4,HIGH);
  digitalWrite(led5,HIGH);
  digitalWrite(led6,LOW);
  digitalWrite(led7,HIGH);
  digitalWrite(led8,LOW);
  delay(5000);
  digitalWrite(led1,HIGH);
  digitalWrite(led2,LOW);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,LOW);
  digitalWrite(led5,LOW);
  digitalWrite(led6,HIGH);
  digitalWrite(led7,HIGH);
  digitalWrite(led8,LOW);
  delay(5000);
  digitalWrite(led1,HIGH);
  digitalWrite(led2,LOW);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,LOW);
  digitalWrite(led5,HIGH);
  digitalWrite(led6,LOW);
  digitalWrite(led7,LOW);
  digitalWrite(led8,HIGH);
  delay(5000);
  
  
}