If you need, I can also generate a (e.g., 4 weeks vs. 8 weeks) or a list of the first 100 words from the book to get started. Just let me know.

The best versions of the follow a strict three-column layout:

| Word from PDF | Your Opposite (using known N5-N3 words) | Check in dictionary | | :--- | :--- | :--- | | 増える (fueru - to increase) | 減る (heru - to decrease) | ✔️ N3 common | | 詳しい (kuwashii - detailed) | 曖昧 (aimai - vague) or 簡単 (kantan - simple) | ✔️ | | 必ず (kanarazu - without fail) | たまに (tama ni - occasionally) | ✔️ nuance difference |