const int switchPin = 8;
unsigned long previousTime = 0;
int switchState = 0;
int prevSwitchState = 0;

int led = 2;
long interval = 5000;

void setup() {
  for(int x = 2;x<8;x++){
    pinMode(x, OUTPUT);
  }

  pinMode(switchPin, INPUT);
}

void loop() {
  unsigned long currentTime = millis();

  if (currentTime - previousTime > interval){
    previousTime = currentTime;
    
    digitalWrite(led, HIGH);
    led++;

    if(led == 7){
    }
  }
  
  switchState = digitalRead(switchPin);

  if(switchState != prevSwitchState){
    for(int x = 2;x<8;x++){
      digitalWrite(x, LOW);
    }

    led = 2;
    previousTime = currentTime;
  }

  prevSwitchState = switchState;
}