done that ... a thousand times already 
(ROOT (S (VP (VBN done) (NP (DT that)) (, ...) (NP (QP (DT a) (CD thousand)) (NNS times)) (ADVP (RB already)))))
(ROOT (S (VP (VBN ) (NP (DT )) (, ) (NP (QP (DT ) (CD )) (NNS )) (ADVP (RB )))))