int led1 = 23;
int led2 = 22;
int led3 = 21;
int led4 = 19;
int led5 = 18;
int led6 = 5;
int led7 = 17;
int led8 = 16;
int led9 = 4;
int led10 = 2;
int led11 = 15;
int led12 = 13;
int led13 = 12;
int led14 = 14;
int led15 = 27;
int led16 = 26;
int pulsador1 = 25;
int pulsador2 = 33;
int valor1 = 0;
int valor2 = 0;

void setup() {
  pinMode (led1, OUTPUT);
  pinMode (led2, OUTPUT);
  pinMode (led3, OUTPUT);
  pinMode (led4, OUTPUT);
  pinMode (led5, OUTPUT);
  pinMode (led6, OUTPUT);
  pinMode (led7, OUTPUT);
  pinMode (led8, OUTPUT);
  pinMode (led9, OUTPUT);
  pinMode (led10, OUTPUT);
  pinMode (led11, OUTPUT);
  pinMode (led12, OUTPUT);
  pinMode (led13, OUTPUT);
  pinMode (led14, OUTPUT);
  pinMode (led15, OUTPUT);
  pinMode (led16, OUTPUT);
  pinMode (pulsador1, INPUT);
  pinMode (pulsador2, INPUT);
}

void loop() {
  valor1 = digitalRead(pulsador1);
  valor2 = digitalRead(pulsador2);

 if (valor1 == HIGH){
  digitalWrite(led1, HIGH);
  delay (500);
  digitalWrite(led1, LOW);

  digitalWrite(led2, HIGH);
  delay (500);
  digitalWrite(led2, LOW);

  digitalWrite(led3, HIGH);
  delay (500);
  digitalWrite(led3, LOW);

  digitalWrite(led4, HIGH);
  delay (500);
  digitalWrite(led4, LOW);

  digitalWrite(led5, HIGH);
  delay (500);
  digitalWrite(led5, LOW);

  digitalWrite(led6, HIGH);
  delay (500);
  digitalWrite(led6, LOW);

  digitalWrite(led7, HIGH);
  delay (500);
  digitalWrite(led7, LOW);

  digitalWrite(led8, HIGH);
  delay (500);
  digitalWrite(led8, LOW);

  digitalWrite(led9, HIGH);
  delay (500);
  digitalWrite(led9, LOW);

  digitalWrite(led10, HIGH);
  delay (500);
  digitalWrite(led10, LOW);

  digitalWrite(led11, HIGH);
  delay (500);
  digitalWrite(led11, LOW);

  digitalWrite(led12, HIGH);
  delay (500);
  digitalWrite(led12, LOW);

  digitalWrite(led13, HIGH);
  delay (500);
  digitalWrite(led13, LOW);

  digitalWrite(led14, HIGH);
  delay (500);
  digitalWrite(led14, LOW);

  digitalWrite(led15, HIGH);
  delay (500);
  digitalWrite(led15, LOW);

  digitalWrite(led16, HIGH);
  delay (500);
  digitalWrite(led16, LOW);
 }

 if (valor2 == HIGH){
  digitalWrite(led1, HIGH);
  delay (500);
  digitalWrite(led1, LOW);

  digitalWrite(led5, HIGH);
  delay (500);
  digitalWrite(led5, LOW);

  digitalWrite(led9, HIGH);
  delay (500);
  digitalWrite(led9, LOW);

  digitalWrite(led13, HIGH);
  delay (500);
  digitalWrite(led13, LOW);

  digitalWrite(led2, HIGH);
  delay (500);
  digitalWrite(led2, LOW);

  digitalWrite(led6, HIGH);
  delay (500);
  digitalWrite(led6, LOW);

  digitalWrite(led10, HIGH);
  delay (500);
  digitalWrite(led10, LOW);

  digitalWrite(led14, HIGH);
  delay (500);
  digitalWrite(led14, LOW);

  digitalWrite(led3, HIGH);
  delay (500);
  digitalWrite(led3, LOW);

  digitalWrite(led7, HIGH);
  delay (500);
  digitalWrite(led7, LOW);

  digitalWrite(led11, HIGH);
  delay (500);
  digitalWrite(led11, LOW);

  digitalWrite(led15, HIGH);
  delay (500);
  digitalWrite(led15, LOW);

  digitalWrite(led4, HIGH);
  delay (500);
  digitalWrite(led4, LOW);

  digitalWrite(led8, HIGH);
  delay (500);
  digitalWrite(led8, LOW);

  digitalWrite(led12, HIGH);
  delay (500);
  digitalWrite(led12, LOW);

  digitalWrite(led16, HIGH);
  delay (500);
  digitalWrite(led16, LOW);
 }
}