After three days of using the gel, my mouth has returned to its familiar self.
( ( After ( ( three days ) ( of ( using ( the gel ) ) ) ) ) ( , ( ( my mouth ) ( ( has ( returned ( to ( its ( familiar self ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN After) (NP (NP (CD three) (NNS days)) (PP (IN of) (S (VP (VBG using) (NP (DT the) (NN gel))))))) (, ,) (NP (PRP$ my) (NN mouth)) (VP (VBZ has) (VP (VBN returned) (PP (TO to) (NP (PRP$ its) (JJ familiar) (NN self))))) (. .)))
After three days they could no longer stand the pain.
( ( After ( three days ) ) ( they ( ( ( could ( no longer ) ) ( stand ( the pain ) ) ) . ) ) )
(ROOT (S (PP (IN After) (NP (CD three) (NNS days))) (NP (PRP they)) (VP (MD could) (ADVP (RB no) (RB longer)) (VP (VB stand) (NP (DT the) (NN pain)))) (. .)))