Present, Future 考えにふける, 考えにふけります [does], will [do] 考えにふけらない, 考えにふけりません doesn't [do], will not [do] Past 考えにふけった, 考えにふけりました [did] 考えにふけらなかった, 考えにふけりませんでした didn't [do] Te-form, Continuative 考えにふけって, 考えにふけりまして 考えにふけらないで, 考えにふけりませんで 考えにふけらなくて Progressive 考えにふけっている, 考えにふけっています [doing], to be [doing] 考えにふけっていない, 考えにふけっていません not [doing] Volitional 考えにふけろう, 考えにふけりましょう let's [do]!, I/we will [do], I/we intend to [do] 考えにふけるまい, 考えにふけりますまい I will not [do], I do not intend to [do] Imperative 考えにふけれ, 考えにふけりなさい [do] ! 考えにふけるな, 考えにふけりなさるな don't [do] ! Request 考えにふけってください please [do] 考えにふけらないでください please don't [do] Provisional 考えにふければ if X [does], if X [is ~] 考えにふけらなければ if X doesn't [do], if X [is not ~] Conditional 考えにふけったら, 考えにふけりましたら if X were to [do], when X [does] 考えにふけらなかったら, 考えにふけりませんでしたら if X weren't to [do], when X doesn't [do] Potential 考えにふけれる, 考えにふけれます be able to [do], can [do] 考えにふけれない, 考えにふけれません not be able to [do], can't [do] Passive, Respectful 考えにふけられる, 考えにふけられます is [done] (by ...), will be [done] (by ...) 考えにふけられない, 考えにふけられません isn't [done] (by ...), will not be [done] (by ...) Causative 考えにふけらせる, 考えにふけらせます makes/will make (someone) [do] 考えにふけらせない, 考えにふけらせません doesn't/won't make (someone) [do] Causative passive 考えにふけらせられる, 考えにふけらせられます is made/will be made to [do] (by someone) 考えにふけらせられない, 考えにふけらせられません isn't made/won't be made to [do] (by someone) ~たい form 考えにふけりたい want to [do] 考えにふけりたくない don't want to [do]