int RED=1;
int YELLOW=4;
int GREEN=10;

void setup() {
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);
}

void loop() {
  digitalWrite(RED, HIGH);
  delay(10000);
  digitalWrite(RED,LOW);

  digitalWrite(YELLOW, HIGH);
  delay(4000);
  digitalWrite(YELLOW,LOW);

  digitalWrite(GREEN, HIGH);
  delay(2000);
  digitalWrite(GREEN, LOW);
}