int x=1;
void setup() {
  Serial.begin(9600);
  while (x < 10) {
  x =x+2;
  Serial.println(x);
  }
  while (x > 1)
  {x =x-2;
  Serial.println(x);
  }
  


}

void loop() {
  // put your main code here, to run repeatedly:

}