#define RED_LED 32
#define GREEN_LED 21
#define BLUE_LED 18

void setup() {
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
pinMode(BLUE_LED, OUTPUT);
}

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

digitalWrite(GREEN_LED, HIGH);
delay(1000);
digitalWrite(GREEN_LED, LOW);
delay(1000);

digitalWrite(BLUE_LED, HIGH);
delay(1000);
digitalWrite(BLUE_LED, LOW);
delay(1000);
}