  Orthosymplectic Lie superalgebras are fundamental symmetries in modern
physics, such as massive supergravity. However, their representations are far
from being thoroughly understood. In the present paper, we completely determine
the structure of their various supersymmetric polynomial representations
obtained by swapping bosonic multiplication operators and differential
operators in the canonical supersymmetric polynomial representations. In
particular, we obtain certain new infinite-dimensional irreducible
representations and new composition series of indecomposable representations
for these algebras.
