probably so yeah you can get a head start on it
( ( probably so ) ( yeah ( you ( can ( ( get ( a ( head start ) ) ) ( on it ) ) ) ) ) )
(ROOT (S (ADVP (RB probably) (RB so)) (VP (VB yeah) (SBAR (S (NP (PRP you)) (VP (MD can) (VP (VB get) (NP (DT a) (NN head) (NN start)) (PP (IN on) (NP (PRP it))))))))))
You can get a head start on it if you plant now.
( You ( ( can ( ( ( get ( a ( head start ) ) ) ( on it ) ) ( if ( you ( plant now ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB get) (NP (DT a) (NN head) (NN start)) (PP (IN on) (NP (PRP it))) (SBAR (IN if) (S (NP (PRP you)) (VP (VB plant) (ADVP (RB now))))))) (. .)))