( ( ( ( Two high ) and ) ( two ( low tides ) ) ) ( ( occur daily ) ; ) )
(ROOT (S (NP (NP (CD Two) (NN high)) (CC and) (NP (CD two) (JJ low) (NNS tides))) (VP (VBP occur) (ADVP (RB daily))) (: ;)))
Two high and two low tides occur daily;
(ROOT (S (NP (NP (CD Two) (NN low)) (CC and) (NP (JJ high) (NNS tides))) (VP (VBP occur) (PP (IN per) (NP (NN day)))) (. .)))