const int ledm = 13, ledu = 12, ledc = 11, ledp = 10;
void setup() {
  // put your setup code here, to run once:
pinMode(ledm, OUTPUT);
pinMode(ledu, OUTPUT);
pinMode(ledc, OUTPUT);
pinMode(ledp, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
for(int i=1; i<=5; i++){
  digitalWrite(ledm, HIGH);
  digitalWrite(ledu, HIGH);
  digitalWrite(ledc, HIGH);
  digitalWrite(ledp, HIGH);
  delay(500);
  digitalWrite(ledm, LOW);
  digitalWrite(ledu, LOW);
  digitalWrite(ledc, LOW);
  digitalWrite(ledp, LOW);
  delay(500);
} for(int i=1; i<=5; i++){
  digitalWrite(ledu, HIGH);
  digitalWrite(ledc, HIGH);
  digitalWrite(ledp, HIGH);
  delay(500);
  digitalWrite(ledu, LOW);
  digitalWrite(ledc, LOW);
  digitalWrite(ledp, LOW);
  delay(500);
}for(int i=1; i<=5; i++){
  digitalWrite(ledc, HIGH);
  digitalWrite(ledp, HIGH);
  delay(500);
  digitalWrite(ledc, LOW);
  digitalWrite(ledp, LOW);
  delay(500);
}for(int i=1; i<=5; i++){
  digitalWrite(ledp, HIGH);
  delay(500);
  digitalWrite(ledp, LOW);
  delay(500);
}
}