Say again, slowly.
( ( ( ( Say again ) , ) slowly ) . )
(ROOT (S (VP (VB Say) (ADVP (RB again)) (, ,) (ADVP (RB slowly))) (. .)))
Don't speak until you're told o.
( ( Do n't ) ( speak ( until ( you ( 're ( told o. ) ) ) ) ) )
(ROOT (S (VP (VB Do) (RB n't) (VP (VB speak) (SBAR (IN until) (S (NP (PRP you)) (VP (VBP 're) (VP (VBN told) (NP (NN o.))))))))))