#define RED 12
#define GREEN 11
#define BLUE 10
void setup() 
{
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);

}

void loop() 
{
  
 digitalWrite(RED, 1);
 delay(1000);
 digitalWrite(RED, 0);
 delay(1000);

 digitalWrite(GREEN, 1);
 delay(1000);
 digitalWrite(GREEN, 0);
 delay(1000);

 digitalWrite(BLUE, 1);
 delay(1000);
 digitalWrite(BLUE, 0);
 delay(1000);

}