Or to judge by the  Failing to nurse at night can lead to painful engorgement or even breast infection.
( Or ( ( to ( ( judge ( by ( ( the Failing ) ( to nurse ) ) ) ) ( at night ) ) ) ( ( can ( lead ( to ( ( ( painful engorgement ) or ) ( even ( breast infection ) ) ) ) ) ) . ) ) )
(ROOT (S (CC Or) (S (VP (TO to) (VP (VB judge) (PP (IN by) (NP (NP (DT the) (NN Failing)) (PP (TO to) (NP (NN nurse))))) (PP (IN at) (NP (NN night)))))) (VP (MD can) (VP (VB lead) (PP (TO to) (NP (NP (JJ painful) (NN engorgement)) (CC or) (NP (RB even) (NN breast) (NN infection)))))) (. .)))
Mothers can go many hours without nursing.
( Mothers ( ( can ( ( go ( many hours ) ) ( without nursing ) ) ) . ) )
(ROOT (S (NP (NNS Mothers)) (VP (MD can) (VP (VB go) (NP (JJ many) (NNS hours)) (PP (IN without) (NP (NN nursing))))) (. .)))