| Verb# | Group | High Intermediate Verbs 360 | |
| 8 | 1 | 漢字 | |
| 辞書 jisho-kei | 開く | aku | |
| -masu | 開きます | to open, something opens | |
| -nai | 開かない | ||
| -te | 開いて | ||
| -ta | 開いた | ||
| 意向形 ikou-kei | intentional form | ||
| 仮定形 katei-kei | hypothetical form | 開けば | |
| 可能形 kanou-kei | possibility form | ||
| 受身形 ukemi kei | passive voice | ||
| 使役形 shieki kei | causative form | ||
| Kanji Level 5 (185 kanji) | |||||
| # | Kanji | ||||
| 661 | 効 | koo | effect, result | 1172 | |
| きく | 効く | kiku | to be effective | ||
| ききめ | 効き目 | kikime | effect; virtue; efficacy; impression | ||
| 効果 | kooka | effect; efficacy; result; | |||
| 効果的 | kookatekı | successful |