#define RED 25
#define YELLOW 32
#define GREEN 33
#define RED2 23
#define YELLOW2 22
#define GREEN2 21
#define RED3 27
#define YELLOW3 14
#define GREEN3 12
#define RED4 18
#define YELLOW4 5
#define GREEN4 17
void setup()  
{
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(RED2, OUTPUT);
  pinMode(YELLOW2, OUTPUT);
  pinMode(GREEN2, OUTPUT);
  pinMode(RED3, OUTPUT);
  pinMode(YELLOW3, OUTPUT);
  pinMode(GREEN3, OUTPUT);
  pinMode(RED4, OUTPUT);
  pinMode(YELLOW4, OUTPUT);
  pinMode(GREEN4, OUTPUT);
 

}

void loop() 
{
  digitalWrite(RED, LOW);
  digitalWrite(YELLOW, HIGH);
 digitalWrite(GREEN, LOW);
 digitalWrite(RED2, LOW);
 digitalWrite(YELLOW2, HIGH);
 digitalWrite(GREEN2 , LOW); 
digitalWrite(RED3, LOW);
  digitalWrite(YELLOW3, HIGH);
 digitalWrite(GREEN3, LOW);
 digitalWrite(RED4, LOW);
 digitalWrite(YELLOW4, HIGH);
 digitalWrite(GREEN4 , LOW);
delay(7000);


   digitalWrite(RED, LOW);
  digitalWrite(YELLOW, LOW);
 digitalWrite(GREEN, HIGH);
 digitalWrite(RED2, HIGH);
 digitalWrite(YELLOW2, LOW);
 digitalWrite(GREEN2 , LOW);
 delay(5000);
 digitalWrite(RED3, HIGH);
  digitalWrite(YELLOW3, LOW);
 digitalWrite(GREEN3, LOW);
 digitalWrite(RED4, LOW);
 digitalWrite(YELLOW4, LOW);
 digitalWrite(GREEN4 , HIGH);
 delay(5000);
  
  digitalWrite(RED, LOW);
  digitalWrite(YELLOW, HIGH);
 digitalWrite(GREEN, LOW);
 digitalWrite(RED2, LOW);
 digitalWrite(YELLOW2, HIGH);
 digitalWrite(GREEN2 , LOW); 
digitalWrite(RED3, LOW);
  digitalWrite(YELLOW3, HIGH);
 digitalWrite(GREEN3, LOW);
 digitalWrite(RED4, LOW);
 digitalWrite(YELLOW4, HIGH);
 digitalWrite(GREEN4 , LOW);
delay(7000);


 digitalWrite(RED, LOW);
  digitalWrite(YELLOW, HIGH);
 digitalWrite(GREEN, LOW);
 digitalWrite(RED2, LOW);
 digitalWrite(YELLOW2, HIGH);
 digitalWrite(GREEN2 , LOW);
 digitalWrite(RED3, LOW);
  digitalWrite(YELLOW3,HIGH);
 digitalWrite(GREEN3, LOW);
 digitalWrite(RED4, LOW);
 digitalWrite(YELLOW4, HIGH);
 digitalWrite(GREEN4 , LOW);
 delay(5000);


digitalWrite(RED, LOW);
  digitalWrite(YELLOW, LOW);
 digitalWrite(GREEN,HIGH);
 digitalWrite(RED2, HIGH);
 digitalWrite(YELLOW2, LOW);
 digitalWrite(GREEN2 , LOW);
 digitalWrite(RED3, LOW);
  digitalWrite(YELLOW3,LOW);
 digitalWrite(GREEN3, HIGH);
 digitalWrite(RED4, HIGH);
 digitalWrite(YELLOW4, LOW);
 digitalWrite(GREEN4 , LOW);
 delay(5000);
}