( Typically ( , ( ( this stage ) ( ( ( ( ( occurs ( during ( ( childhood and ) adolescence ) ) ) , ) and ) ( may ( extend ( into adulthood ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Typically)) (, ,) (NP (DT this) (NN stage)) (VP (VP (VBZ occurs) (PP (IN during) (NP (NN childhood) (CC and) (NN adolescence)))) (, ,) (CC and) (VP (MD may) (VP (VB extend) (PP (IN into) (NP (NN adulthood)))))) (. .)))
Typically, this stage occurs during childhood and adolescence, and may extend into adulthood.
(ROOT (S (NP (NNP Childhood)) (VP (VBZ is) (ADJP (ADJP (RB typically) (JJR easier)) (PP (IN for) (S (VP (VBG learning) (NP (JJ multiple) (NNS languages))))))) (. .)))