Your brother came to help us there.
( ( Your brother ) ( ( came ( to ( ( help us ) there ) ) ) . ) )
(ROOT (S (NP (PRP$ Your) (NN brother)) (VP (VBD came) (S (VP (TO to) (VP (VB help) (NP (PRP us)) (ADVP (RB there)))))) (. .)))
You couldn't even come help, nor could your brother.
( ( ( ( ( You ( ( ( could n't ) even ) ( come help ) ) ) , ) nor ) ( could ( your brother ) ) ) . )
(ROOT (S (S (NP (PRP You)) (VP (MD could) (RB n't) (ADVP (RB even)) (VP (VB come) (NP (NN help))))) (, ,) (CC nor) (SINV (VP (MD could)) (NP (PRP$ your) (NN brother))) (. .)))