Louis

All JLPT 4 grammar : そうだ（そうだ, sou da）, it seems ..

All JLPT 4 grammar : 事がある（ことがある, koto ga aru）, (for something) to have occurred; to have done (something)

All JLPT 4 grammar : 〇〇が必要だ（〇〇が必要だ, ga hitsuyou da）, necessary; needed; essential; indispensable

All JLPT 3 grammar : と共に（と共に, to tomo ni）, together with; as X, then Y (e.g. as we age we gain wisdom, as wine matures it becomes more valuable, etc.)

All JLPT 3 grammar : てもしょうがない（てもしょうがない, temo shou ga nai）, even if something is done, there is nothing ones can do

All JLPT 3 grammar : INCOMPLETE（てごらん, te goran）, INCOMPLETE

All JLPT 3 grammar : 既に（すでに, sude ni）, already; too late

All JLPT 3 grammar : 直す（直す, naosu）, to correct

All JLPT 3 grammar : 切る（切る, kiru）, to go through something (often used with the verb "やる" (e.g. : やりきる, to go through something, to finish something once for all) )

All JLPT 3 grammar : ばよかった（ばよかった, -ba yokatta）, it would have been nice if ..