This Part shall apply to the following undertakings:
(1) Unlimited companies and partnerships where all the members thereof who do not have a limit on their liability are
(a) companies limited by shares or by guarantee, or
(b) bodies not governed by the law of the State but equivalent to those in paragraph (a), or
(c) any combination of the types of bodies referred to in subparagraphs (a) and (b), and
(2) Unlimited companies and partnerships where all the members thereof who do not have a limit on their liability are
(i) unlimited companies or partnerships of the type referred to in paragraph (1) that are governed by the laws of a Member State, or
(ii) bodies governed by the laws of a Member State that are of a legal form comparable to those referred to in paragraph (i), or
(b) any combination of the types of bodies referred to in subparagraph (a) and subparagraphs (a) and (b) of paragraph (1).