In chapters 36-39 how do huck and tom enter and exit the phelps's home?

In chapters 36-39 of "The Adventures of Huckleberry Finn," Huck and Tom enter the Phelps's home by pretending to be Tom's brothers, Sid and Tom. They exit after Aunt Sally discovers their true identities and Aunt Polly arrives to confirm their story, allowing them to take off without any trouble.