void setup() {
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
}

void loop() {
  led(1,0,0,0,0,0,0,0);
  led(0,1,0,0,0,0,0,0);
  led(0,0,1,0,0,0,0,0);
  led(0,0,0,1,0,0,0,0);
  led(0,0,0,0,1,0,0,0);
  led(0,0,0,0,0,1,0,0);
  led(0,0,0,0,0,0,1,0);
  led(0,0,0,0,0,0,0,1);
}

void led(bool led1,bool led2,bool led3,bool led4,bool led5,bool led6,bool led7,bool led8){
  if(led1==1){digitalWrite(5,HIGH);}else{digitalWrite(5,LOW);}
  if(led2==1){digitalWrite(6,HIGH);}else{digitalWrite(6,LOW);}
  if(led3==1){digitalWrite(7,HIGH);}else{digitalWrite(7,LOW);}
  if(led4==1){digitalWrite(8,HIGH);}else{digitalWrite(8,LOW);}
  if(led5==1){digitalWrite(9,HIGH);}else{digitalWrite(9,LOW);}
  if(led6==1){digitalWrite(10,HIGH);}else{digitalWrite(10,LOW);}
  if(led7==1){digitalWrite(11,HIGH);}else{digitalWrite(11,LOW);}
  if(led8==1){digitalWrite(12,HIGH);}else{digitalWrite(12,LOW);}
  delay(200);
}