void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("Enter a word.");

}

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

  if (Serial.available() > 0) {
    String read = Serial.readStringUntil('\n');
    int xPos = read.indexOf('X');
    int yPos = read.indexOf('Y');
    int zPos = read.indexOf('Z');
    String extracted = read.substring(xPos + 1, yPos-xPos);
    String extracted2 = read.substring(yPos + 1, zPos-xPos);
    
    Serial.println(extracted);
    Serial.println(extracted2);
  }

}