( ( ( simple , ) ( compound ( , ( complex ( , ( and compound-complex ) ) ) ) ) ) . )
(ROOT (NP (NP (NN simple)) (, ,) (NP (NN compound) (, ,) (NN complex) (, ,) (CC and) (NN compound-complex)) (. .)))
simple, compound, complex, and compound-complex.
(ROOT (S (NP (NNS Scissors)) (VP (VBP are) (NP (JJ compound) (NNS machines))) (. .)))