#define red1 27    
#define yellow1 25
#define green1 32  

#define red2 22  
#define yellow2 25 
#define green2 17  

void setup() {
  pinMode(red1, OUTPUT);
  pinMode(yellow1, OUTPUT);
  pinMode(green1, OUTPUT);
  
  pinMode(red2, OUTPUT);
  pinMode(yellow2, OUTPUT);
  pinMode(green2, OUTPUT);
}

void loop() {
  digitalWrite(red1, HIGH);
  digitalWrite(green2, HIGH); 
  delay(1000); 
  digitalWrite(red1, LOW);
  digitalWrite(green2, LOW);

  digitalWrite(yellow1, HIGH);
  digitalWrite(yellow2, HIGH);
  digitalWrite(red1, LOW);
  digitalWrite(green1, LOW);
  delay(1000);
  digitalWrite(yellow1, LOW);
  digitalWrite(yellow2, LOW);
 
  digitalWrite(green1, HIGH);
  digitalWrite(red2, HIGH); 
  delay(1000); 
  digitalWrite(green1, LOW);
  digitalWrite(red2, LOW);
  
  digitalWrite(yellow1, HIGH);
  digitalWrite(red2, LOW);
  delay(1000); 
  digitalWrite(yellow1, LOW);
  
  digitalWrite(yellow2, HIGH);
  delay(1000);
  digitalWrite(yellow2, LOW);
}