int lampumerah = 2;
int lampukuning = 3;
int lampuhijau = 4;

void setup() {
  pinMode(lampumerah, OUTPUT);
  pinMode(lampukuning, OUTPUT);
  pinMode(lampuhijau, OUTPUT);
}
void loop() {

  int x=1;
  do
  {
    digitalWrite(lampumerah, HIGH); delay(1000);
    digitalWrite(lampumerah, LOW); delay(1000);
    x++;
  }
  while (x<=5);

  int j=1;
  do
  {
    digitalWrite(lampukuning, HIGH); delay(1000);
    digitalWrite(lampukuning, LOW); delay(1000);
  j++;
  }
  while (j<=4);
  // put your main code here, to run repeatedly:
int z=1;
  do
  {
    digitalWrite(lampuhijau, HIGH); delay(1000);
    digitalWrite(lampuhijau, LOW); delay(1000);
  z++;
}
while (z<=3);
}