Here we have two identical paticles with spin $I$, integer or half-integer, and there are $(2I+1)^2$ states.
Each one of them can be uniquely determined by total spin and its orientation, we can use $|J,m\rangle$ to represent this state. And because of its uniqueness, it is either symmetric or antisymmetric.
How to determine whether $|J,m\rangle$ is symmetric or antisymmetric based on $I$, $J$ and $m$?
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