Let n be an integer greater than or equal to 3, and let (R, Delta) be a Hermitian form ring, where R is commutative. We prove that if H is a subgroup of the odd-dimensional unitary group U2n+1 (R, Delta) normalised by a relative elementary subgroup EU2n+1((R, Delta), (I, Omega)), then there is an odd form ideal (J, Sigma) such that
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