(医師が患者に)薬を飲むか飲まないかを決めるのは、あなた自身ですよ。(pattern one)
お酒を飲む飲まないに関わりなく参加者には一人3000円払っていただきます。(pattern two)
I'd like to ask three questions.
The first one is: is "verb+か+verb+ないか" (pattern one) totally interchangeable with "verb+verb+ない" (pattern two)? If not, what is the difference between them (register, formality, frequency, etc.)?
The second one is: can all verbs be grammatically constructed into pattern one and pattern two?
The third one is: can 形容詞 and 形容動詞 be constructed into pattern two? e.g., 安い安くないを気にしている.
ご教授の程お願い致します。