int t1[3]={13,12,11};
int t2[3]={10,9,8};
int t3[3]={7,6,5};
int t4[3]={4,3,2};


/* int red1=0, red2=3, red3=6, red4=9,
yellow1=1, yellow2=4, yellow3=7, yellow4=10,
green1=2, green2=5, green3=8, green4=11; */

void setup() {

  for(int i=0; i<3; i++){
  pinMode(t1[i], LOW);
  pinMode(t2[i], LOW);
  pinMode(t3[i], LOW);
  pinMode(t4[i], LOW);
}
  // put your setup code here, to run once:
/* pinMode(red1, INPUT);
pinMode(red2, INPUT);
pinMode(red3, INPUT);
pinMode(yellow1, INPUT);
pinMode(yellow2, INPUT);
pinMode(yellow3, INPUT);
pinMode(yellow4, INPUT);
pinMode(green1, INPUT);
pinMode(green2, INPUT);
pinMode(green3, INPUT);
pinMode(green4, INPUT); */
}

void loop() {
  // put your main code here, to run repeatedly:

 

digitalWrite(t4[1], LOW);
digitalWrite(t2[0], HIGH);
digitalWrite(t3[0], HIGH);
digitalWrite(t4[0], HIGH);
digitalWrite(t1[0], LOW);
digitalWrite( t1[2], HIGH);
delay(2500);
digitalWrite(t1[2],LOW);
digitalWrite(t1[1], HIGH);
delay(1000);

digitalWrite(t1[1], LOW);
digitalWrite(t1[0], HIGH);
delay(500);
digitalWrite(t2[0], LOW);
digitalWrite( t2[2], HIGH);
delay(2500);
digitalWrite(t2[2],LOW);
digitalWrite(t2[1], HIGH);
delay(1000);

digitalWrite(t2[1], LOW);
digitalWrite(t2[0], HIGH);
delay(500);
digitalWrite(t3[0], LOW);
digitalWrite(t3[2], HIGH);
delay(2500);
digitalWrite(t3[2],LOW);
digitalWrite(t3[1], HIGH);
delay(1000);

digitalWrite(t3[1], LOW);
digitalWrite(t3[0], HIGH);
delay(500);
digitalWrite(t4[0], LOW);
digitalWrite(t4[2], HIGH);
delay(2500);
digitalWrite(t4[2],LOW);
digitalWrite(t4[1], HIGH);
delay(1000);

digitalWrite(t4[1], LOW);
digitalWrite(t2[0], HIGH);
digitalWrite(t3[0], HIGH);
digitalWrite(t4[0], HIGH);
delay(500);


}