of run-of-the-mill profanity 
(ROOT (PP (IN of) (NP (NML (JJ run) (PP (IN -of) (HYPH -) (NP (DT the) (HYPH -) (NN mill)))) (NN profanity))))
(ROOT (PP (IN ) (NP (NML (JJ ) (PP (IN ) (HYPH ) (NP (DT ) (HYPH ) (NN )))) (NN ))))