Over their backs fell the cutting lashes of a whip.
( ( Over ( their backs ) ) ( ( fell ( ( the ( cutting lashes ) ) ( of ( a whip ) ) ) ) . ) )
(ROOT (SINV (PP (IN Over) (NP (PRP$ their) (NNS backs))) (VP (VBD fell)) (NP (NP (DT the) (JJ cutting) (NNS lashes)) (PP (IN of) (NP (DT a) (NN whip)))) (. .)))
They were consistently whipped on their backs.
( They ( ( ( were consistently ) ( whipped ( on ( their backs ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD were) (ADVP (RB consistently)) (VP (VBN whipped) (PP (IN on) (NP (PRP$ their) (NNS backs))))) (. .)))