What is curious about this paragraph? Alright, I'm not going to make it lipogrammatic: 'Here, have seven e's!' Just in case, I'll put every letter in - ABCDEFGHIJKLMNOPQRSTUVWXYZ! So, it must be something else. Yes, there is punctuation, of all sorts. What you're looking for is not about letter frequency, though this property is strange to have in large or long paragraphs. So, what is it? That's for you to answer!