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