enter:
  i word   to insert word
  f word   to find word
  p        to print all
  x        to exit
> i the
the inserted
> i quick
quick inserted
> i brown
... blah blah blah ...
the inserted
> i lazy
lazy inserted
> i dogs
dogs inserted
> p
                                   the

                          quick      

brown                          the   

         fox                         

     dogs   jumped                   

                      over           

                  lazy               

> x