as you peek at it through the fingers in front of your eyes 
(ROOT (SBAR (IN as) (S (NP (PRP you)) (VP (VBP peek) (PP (IN at) (NP (PRP it))) (PP (IN through) (NP (NP (DT the) (NNS fingers)) (PP (IN in) (NP (NP (NN front)) (PP (IN of) (NP (PRP$ your) (NNS eyes)))))))))))
(ROOT (SBAR (IN ) (S (NP (PRP )) (VP (VBP ) (PP (IN ) (NP (PRP ))) (PP (IN ) (NP (NP (DT ) (NNS )) (PP (IN ) (NP (NP (NN )) (PP (IN ) (NP (PRP$ ) (NNS )))))))))))