( ( Squamous ( cell carcinomas ) ) ( ( are ( the ( second ( ( most common ) ( skin cancer ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Squamous) (NN cell) (NNS carcinomas)) (VP (VBP are) (NP (DT the) (JJ second) (ADJP (RBS most) (JJ common)) (NN skin) (NN cancer))) (. .)))
Squamous cell carcinomas are the second most common skin cancer.
(ROOT (S (NP (JJ Squamous) (NN cell) (NN carcinoma)) (VP (VBZ is) (NP (DT the) (JJ second) (ADJP (RBS most) (JJ common)) (NN skin) (NN cancer))) (. .)))