'' is a shapeless inconsequential move relying on the viewer to do most of the work . 
(ROOT (S ('' '') (VP (VBZ is) (NP (NP (DT a) (JJ shapeless) (JJ inconsequential) (NN move)) (VP (VBG relying) (SBAR (IN on) (S (NP (DT the) (NN viewer)) (VP (TO to) (VP (VB do) (NP (NP (JJS most)) (PP (IN of) (NP (DT the) (NN work))))))))))) (. .)))
(ROOT (S ('' ) (VP (VBZ ) (NP (NP (DT ) (JJ ) (JJ ) (NN )) (VP (VBG ) (SBAR (IN ) (S (NP (DT ) (NN )) (VP (TO ) (VP (VB ) (NP (NP (JJS )) (PP (IN ) (NP (DT ) (NN ))))))))))) (. )))