How to create the perfect gender-neutral pronoun

The magical gender neutral pronoun formula:

First you take a consonant or a word ending in a consonant.  You will be adding an E to the end of the consonant so make sure it doesn't sound like he or she if it's after any word that a singular pronoun would be after.  It also can't result in a word that's identical to a preexisting pronoun.  So for example, "Ze" doesn't work because, "is ze" sounds like, "is she."  And your consonant can't be M because if you add and E after M, you end up with, "me," which is already in use.

So we will be adding, "E" to the end of the consonant to get the nominative form.  So if we use letter, "R" as an example, our nominative pronoun is Re, the other pronounce are made by replace the th in conjugations of, "they" with our pronoun with the exception of the reflexive pronoun.  So our possessive pronoun is Reir for example.  The reflexive form is different in that after you replace the th in, "themselves" with your consonant, you take the, "ves" and replace it with an F.  So with R as our consonant, it goes like this:

Nominative: Re
Oblique: Rem
Possessive Determiner: Reir
Possessive Pronoun: Reirs
Reflexive: Remself

Now let's pick a consonant.