, mind-numbingly , indescribably bad 
(ROOT (S (, ,) (S (VP (NN mind) (HYPH -) (ADVP (RB numbingly)))) (, ,) (ADJP (RB indescribably) (JJ bad))))
(ROOT (S (, ) (S (VP (NN ) (HYPH ) (ADVP (RB )))) (, ) (ADJP (RB ) (JJ ))))