int cervena1 = 3;
int oranzova1 = 4;
int zelena1 = 5;

void setup() {
  pinMode(cervena1, OUTPUT);
  pinMode(oranzova1, OUTPUT);
  pinMode(zelena1, OUTPUT);
}
void loop() {
  digitalWrite(cervena1, HIGH);
  delay(1000);
  digitalWrite(oranzova1, HIGH);
  delay(1000);
  digitalWrite(cervena1, LOW);
  digitalWrite(oranzova1, LOW);
  digitalWrite(zelena1, HIGH);
  delay(2000);
  digitalWrite(zelena1, LOW);
  digitalWrite(oranzova1, HIGH);
  delay(1000);
  digitalWrite(oranzova1, LOW);
  digitalWrite(cervena1, HIGH);
  delay(1000);
}