For some wild reason, this sentence makes perfect sense.
“All the faith he had had had had no effect on the outcome of his life.”
and
“It is true for all that that that that that that that refers to is not the same that that that that refers to.”
(“That” one is from The English Club.)
and
“No word begins with because, because, because is a conjunction.”
and
“If you were to second-guess your decision to book time to visit a Native American community, that would be a reservation reservation reservation.”
(from comedian Brian Regan)