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каковы бы ни были причины stresses
gen.	whatever the reason
automat.	for any reason (ssn)
какова бы ни была причина
formal	be the cause what it may ("Be the cause what it may, it was the end of the Gloria Scott and of the rabble who held command of her." (Sir Arthur Conan Doyle) ART Vancouver)

каковы бы ни были причины: 3 phrases in 2 subjects

Automated equipment	2
Scientific	1