Explanation
Expresses 'whether A or B'; both situations are included.
Formation
Commonly i-adjective stems + かれ + i-adjective stems + かれ (e.g. 早かれ遅かれ). Also sometimes Noun + かれ + Noun + かれ in older usage.
Detailed explanation
The grammar point ～AかれBかれ is a somewhat literary/old-fashioned pattern often seen with i-adjectives (e.g., 早かれ遅かれ). It can mean 'whether A or B'. Here it's shown with nouns or verbs, which is also possible in older or set expressions.
Examples
Fuyu kare natsu kare, mainichi jogingu suru.
Whether it's winter or summer, I jog every day.
Kare ga kuru kare konai kare, paatii wa hajimeru.
Whether he comes or not, the party will start.
Katsu kare makeru kare, shiai ni deru koto ga daiji da.
Whether we win or lose, it's important to take part in the match.
Ame kare yuki kare, inu no sanpo wa kakasanai.
Whether it's raining or snowing, I never skip walking the dog.
Practice
Grammar content sourced from hanabira.org.