^ Spelling has nothing to do with grammar. The 'words' you are talking about do not imply spelling on any front. Also, please, do you think I am concerned about spelling here? Herwer, correctct a frew maore.
Yes, proof. Otherwise, you are spreading false information, as usual. No page in the entire manga supports your logic, other than Kakashi displaying below-decent detection abilities.
P.s: Linguistics is the scientific study of language. It includes language form, language meaning, and language in context. Again, what the hell are you talking about? How does that prove your point that spelling is somehow a part of grammar? In fact even Phonetics that make the sounds of the words, have little or nothing to do with spelling. 20 secs indeed.
Stay on topic, or at least stop posting this nonsense. No offense intended.