Universal 270: category X (neuter gender) ⇒ category X (non-neuter gender)
Original
If a certain grammatical distinction occurs in the paradigm of the neuter gender, then this distinction also appears in the paradigm of the non-neuter gender.
Standardized
IF any grammatical distinction is made in the paradigm of the neuter gender, THEN this same distinction is also made in the paradigm of non-neuter genders.