  Ohno's relation is a well-known family of relations among multiple zeta
values, which can naturally be regarded as a type of duality for a certain
power series which we call an Ohno sum. In this paper, we investigate
$\mathbb{Q}$-linear relations among Ohno sums which are not contained in Ohno's
relation. We prove two new families of such relations, and pose several further
conjectural families of such relations.
