( ( The nitrogenous ) ( ( bases ( ( ( spell out ) ( specific ( amino acids ) ) ) ( with ( ( ( three-letter words ) , ) ( the ( genetic code ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS nitrogenous)) (VP (VBZ bases) (VP (VB spell) (PRT (RP out)) (NP (JJ specific) (JJ amino) (NNS acids)) (PP (IN with) (NP (NP (JJ three-letter) (NNS words)) (, ,) (NP (DT the) (JJ genetic) (NN code)))))) (. .)))
The nitrogenous bases spell out specific amino acids with three-letter words, the genetic code.
(ROOT (S (NP (DT The) (JJ genetic) (NN code)) (VP (VBZ works) (PP (IN in) (NP (NP (NN series)) (PP (IN of) (NP (JJ three-letter) (NNS codes)))))) (. .)))