( ( the ( country codes ) ) ( ( will ( be ( three ( letters ( or less ) ) ) ) ) . ) )
(ROOT (S (NP (DT the) (NN country) (NNS codes)) (VP (MD will) (VP (VB be) (NP (CD three) (NNS letters) (QP (CC or) (JJR less))))) (. .)))
the country codes will be three letters or less.
(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)))))) (. .)))