const int led1 = 33; 
const int led2 = 25; 
void setup() { 
pinMode(led1, OUTPUT); 
pinMode(led2, OUTPUT); 
} 
void loop() { 
digitalWrite(led1, HIGH); // LED OFF 
delay(800); 
digitalWrite(led1, LOW);  // LED ON 
delay(800); 
digitalWrite(led2, HIGH); // LED OFF 
delay(800); 
digitalWrite(led2, LOW);  // LED ON 
delay(800); 
digitalWrite(led1, HIGH);  // LED ON 
digitalWrite(led2, HIGH);  // LED ON 
delay(800);
digitalWrite(led1, LOW);  // LED OFF 
digitalWrite(led2, LOW);  // LED OFF 
delay(800);
}