The following text was written to the standard output stream when the ? program was executed from IntelliJ.
>>> Display cat dog cofee pizza Mariana Computer Tea Ice Oswego Apple >>> add lol ### invalid operand for add command >>> add last lol >>> display cat dog cofee pizza Mariana Computer Tea Ice Oswego Apple null lol >>> swap 1 12 >>> display lol dog cofee pizza Mariana Computer Tea Ice Oswego Apple null cat >>> add first Bronx >>> display Bronx lol dog cofee pizza Mariana Computer Tea Ice Oswego Apple null cat >>>