int first[3] = {0, 1, 2};
int second[3] = {3, 4, 5 };
int third[3] = {6, 7, 8};
int forth[3] = {9, 10, 11};
int i;

int short_delay;


void setup() {
  for(i = 0; i<3; i++){
    pinMode(first[i], OUTPUT);
  }
  for(i = 0; i<3; i++){
    pinMode(second[i], OUTPUT);
  }
  for(i = 0; i<3; i++){
    pinMode(third[i], OUTPUT);
  }
  for(i = 0; i<3; i++){
    pinMode(forth[i], OUTPUT);
  }
  
  
  short_delay = 400;
}

void loop() {
  // put your main code here, to run repeatedly:
 for(i=0; i<3; i++){
  digitalWrite(second[2], HIGH);
  digitalWrite(third[2], HIGH);
  digitalWrite(forth[2], HIGH);
  digitalWrite(first[0], HIGH);
  delay(3000);
  digitalWrite(first[0], LOW);
 }
 for(i=0; i<3; i++){
  digitalWrite(first[1], HIGH);
  delay(300);
  digitalWrite(first[1], LOW);
  delay(300);
 }
 for(i=0; i<3; i++){
  digitalWrite(first[2], HIGH);
  digitalWrite(second[2], LOW);
 
 }

 for(i=0; i<3; i++){
  digitalWrite(second[0], HIGH);
  delay(3000);
  digitalWrite(second[0], LOW);
 }
 for(i=0; i<3; i++){
  digitalWrite(second[1], HIGH);
  delay(300);
  digitalWrite(second[1], LOW);
  delay(300);
 }
 for(i=0; i<3; i++){
  digitalWrite(second[2], HIGH);
  digitalWrite(third[2], LOW);
  
 }

  for(i=0; i<3; i++){
  digitalWrite(third[0], HIGH);
  delay(3000);
  digitalWrite(third[0], LOW);
 }
 for(i=0; i<3; i++){
  digitalWrite(third[1], HIGH);
  delay(300);
  digitalWrite(third[1], LOW);
  delay(300);
 }
 for(i=0; i<3; i++){
  digitalWrite(third[2], HIGH);
  digitalWrite(forth[2], LOW);
  
 }

  for(i=0; i<3; i++){
  digitalWrite(forth[0], HIGH);
  delay(3000);
  digitalWrite(forth[0], LOW);
 }
 for(i=0; i<3; i++){
  digitalWrite(forth[1], HIGH);
  delay(300);
  digitalWrite(forth[1], LOW);
  delay(300);
 }
 for(i=0; i<3; i++){
  digitalWrite(forth[2], HIGH);
  digitalWrite(first[2], LOW);
  
 }






}