//int Size  = 3;
//int phase1[Size] = {13,12,11};
//int phase2[Size] = {10,9,8};

int btnNumber = 5;

int btn1[btnNumber] = {,9,10,11,12,13};

bool btnState = HIGH;

int counter  = 0;




void setup() {
Serial.begin(9600);
  for(int n=0; n<btnNumber; n++){
    pinMode(btn1[n],INPUT_PULLUP);
  
  }
  
}

void loop() {

 for (int i=0; i<btnNumber; i++){
      if(btnState = LOW){
        Serial.print("Button");
        Serial.print(btn1[i]);
        Serial.print("pressed");
        counter += btn1[i];
        
      }
  
 }

}