((output
  (((f.ml (1 0) (2 9))
    (unordered
     ((((f.ml (1 8) (1 13))
        (unordered
         ((((f.ml (1 10) (1 13))
            (paragraph (((f.ml (1 10) (1 13)) (word foo)))))))))
       ((f.ml (2 0) (2 7)) (paragraph (((f.ml (2 3) (2 6)) (word Bar)))))))))))
 (warnings
  ( "File \"f.ml\", line 2, characters 0-2:\
   \n'{2 ...}' (section heading) is not allowed in '{li ...}' (list item).\
   \nSuggestion: move '{2' outside of any other markup.")))
