Scanner kb= new Scanner (System.in);

String inputString=kb.next();

boolean result=false;


if (inputString.length() => 3) {
  for (int i=0; i<inputString.length()-2; i++)
  //Loop how ever many letters there are minus 2 times
  {
    if (inputString.substr(i,1)=="b" && inputString.substr(i+2,1)=="b") {
      result=true;
    }

  }
} else {
  result=false;
}
System.out.println(result);