P
Pardon me, but I don't think so
Pardon me, I meant something different
Perhaps I am indiscreet
Perhaps not in the strictest sense
Perhaps you do not feel at liberty to do so
Perhaps you think me ungrateful
Personally I confess to an objection
Please continue to be frank
Please do not think I am asking out of mere curiosity
Please forgive my thoughtlessness
Please make yourself at home
Pray don't apologize
Pray forgive me for intruding on you so unceremoniously
Pray go on!
Precisely, that is just what I meant
Put in that way it certainly sounds very well