  Nonabelian Fradkin-Vasiliev cubic interactions for dual-graviton-like gauge
fields with gravity and themselves are constructed in anti-de Sitter spacetime.
The Young diagrams of gauge potentials have shapes of 'tall-hooks', i.e. two
columns the second of height one.
  The underlying nonabelian algebra is a Clifford algebra with the anti-de
Sitter signature. We also discuss the universal enveloping realization of
higher-spin algebras, showing that there is a one-parameter family of algebras
compatible with unitarity, which is reminiscent of 3d deformed oscillators.
