Present, Future 知り抜く, 知り抜きます [does], will [do] 知り抜かない, 知り抜きません doesn't [do], will not [do] Past 知り抜いた, 知り抜きました [did] 知り抜かなかった, 知り抜きませんでした didn't [do] Te-form, Continuative 知り抜いて, 知り抜きまして 知り抜かないで, 知り抜きませんで 知り抜かなくて Progressive 知り抜いている, 知り抜いています [doing], to be [doing] 知り抜いていない, 知り抜いていません not [doing] Volitional 知り抜こう, 知り抜きましょう let's [do]!, I/we will [do], I/we intend to [do] 知り抜くまい, 知り抜きますまい I will not [do], I do not intend to [do] Imperative 知り抜け, 知り抜きなさい [do] ! 知り抜くな, 知り抜きなさるな don't [do] ! Request 知り抜いてください please [do] 知り抜かないでください please don't [do] Provisional 知り抜けば if X [does], if X [is ~] 知り抜かなければ if X doesn't [do], if X [is not ~] Conditional 知り抜いたら, 知り抜きましたら if X were to [do], when X [does] 知り抜かなかったら, 知り抜きませんでしたら if X weren't to [do], when X doesn't [do] Potential 知り抜ける, 知り抜けます be able to [do], can [do] 知り抜けない, 知り抜けません not be able to [do], can't [do] Passive, Respectful 知り抜かれる, 知り抜かれます is [done] (by ...), will be [done] (by ...) 知り抜かれない, 知り抜かれません isn't [done] (by ...), will not be [done] (by ...) Causative 知り抜かせる, 知り抜かせます makes/will make (someone) [do] 知り抜かせない, 知り抜かせません doesn't/won't make (someone) [do] Causative passive 知り抜かせられる, 知り抜かせられます is made/will be made to [do] (by someone) 知り抜かせられない, 知り抜かせられません isn't made/won't be made to [do] (by someone) ~たい form 知り抜きたい want to [do] 知り抜きたくない don't want to [do]