Looking for Japanese Grammar book

Unfortunately I forgot the name of the book.

There is a book of Japanese grammar, without exercises, but full of schemas to simplify understanding Japanese grammar. The author was kind of engineer who analyzed his language and showed the grammar patterns in “geometrical” shapes.

Who knows this book, please advise the name.

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No idea, but sounds interesting.

I saw it on Amazon, but now can’t fine it :frowning:

Maybe try looking here? https://www.amazon.com/gp/history