Them (singular) Neologistic gender-neutral third-person singular object pronoun, suggested for use in place of him and her.
They (singular). Gender-neutral neologistic third-person singular subject pronoun, coordinate with gendered pronouns he and she.
Belonging to per, their (singular). Gender-neutral third-person singular possessive adjective, coordinate with gendered his and her.
In accordance with, as per
For each.
By the, by means of the, via the, through the.
To each, in each (used in expressing ratios of units).
he or she