( ( Squamous ( cell carcinoma ) ) ( ( is ( ( the ( second ( ( ( most ( common ( of ( skin cancers ) ) ) ) ( , ( accounting ( for ( about 20 ) ) ) ) ) percent ) ) ) ( of ( skin cancers ) ) ) ) . ) )
(ROOT (S (NP (JJ Squamous) (NN cell) (NN carcinoma)) (VP (VBZ is) (NP (NP (DT the) (JJ second) (UCP (ADJP (RBS most) (JJ common) (PP (IN of) (NP (NN skin) (NNS cancers)))) (, ,) (NP (NP (NN accounting)) (PP (IN for) (NP (QP (RB about) (CD 20)))))) (NN percent)) (PP (IN of) (NP (NN skin) (NNS cancers))))) (. .)))
Squamous cell carcinoma is the second most common of skin cancers, accounting for about 20 percent of skin cancers.
(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))) (. .)))