"I before E" is a common mnemonic that is taught for spelling certain English words, but this mnemonic is often wrong, as pointed out in this Language Log post.
The aim of this question is to create the longest grammatical English sentence with non-repeating words (each word can only be used once in the entire sentence) which contains the maximum number of words that violate the "I before E" rule, without resorting to quotations, numbers over ten, or proper nouns.
Sentences will be scored by the number of violations, minus the number of non-violations (includes words which don't include "ie" or "ei").
Example:
Caffeinated atheists reinvent their weird foreign neighbours(7-0=7)
Caffeinated atheists reinvent their blue foreign neighbours(6-1=5)