On 26 March 2012 , it was first successfully concluded by a 12-year-old American , Tom Schaar .
It was first successfully completed by a twelve-year-old American , Tom Schaar , on 26 March 2012 .
It was first successfully completed by a twelve-year-old American , Tom Schaar , on 26 March 2012 .
이 텍스트를 바꾸십시오: On 26 March 2012 , it was first successfully concluded by a 12-year-old American , Tom Schaar . 산출: