초음차센서 코딩을 했는데 동시에 작동을 안하네요 헉시 어디가 문제인지 알수 있울까요?

const int trig = 13;

const int trig2 = 11;

const  int echo = 12;

const  int echo2 = 10;

const int LED = 2;

const int LED2 = 3;



void setup() {

  Serial.begin(9600);

  pinMode(trig, OUTPUT); 

  pinMode(trig2, OUTPUT); 

  pinMode(echo, INPUT); 

  pinMode(echo2, INPUT);

  pinMode(LED, OUTPUT);

  pinMode(LED2, OUTPUT);

}

void loop () {

  digitalWrite(trig, HIGH);

  delayMicroseconds(10); 

  digitalWrite(trig, LOW);

  int distance = pulseIn(echo, HIGH) * 340/2/10000;

  if (distance <= 10) {

    digitalWrite(LED, LOW);

  } else {

    digitalWrite(LED, HIGH);

   Serial.print(distance);

   Serial.println("cm");

   delay(100); 

 

   digitalWrite(trig2, HIGH);

  delayMicroseconds(10); 

  digitalWrite(trig2, LOW);

  int distance = pulseIn(echo2, HIGH) * 340/2/10000;

  if (distance <= 10) {

    digitalWrite(LED2, LOW);

  } else {

    digitalWrite(LED2, HIGH);

   Serial.print(distance);

   Serial.println("cm");

   delay(100); }}}