…けれど => Explanation N3
Exclamatory
どんなに…だろう(か) => how…!; what…! N3
Emphasis on degree
けど => but; however; although ~ N5
けれど => but; however; although N4
How to say the beginning
けれど => but; however; although N4
Things do not match the prediction
だけど => but; however; although; regarding ~ N3
けれども => but; however; although ~ N4
How to say the beginning
どんな => Whatever, anything (also) N5
Things do not match the prediction
なんか/なんて/など => give examples N3
~もどうぜんだ(~も同然だ)      => just like; same as ~ N1
どんな...ですか => How N5
Confirm
だけど => A, however/but B N3
Contrast