[name_f]Nina[/name_f]
Oni
[name_u]Loni[/name_u]
[name_f]Linnie[/name_f]
[name_f]Line[/name_f]
[name_u]Lee[/name_u]
[name_u]Neo[/name_u]
[name_f]Lea[/name_f]
Loe / Lowey
[name_f]Nini[/name_f]
[name_f]Lulie[/name_f] / [name_u]Lou[/name_u]
[name_u]Vesper[/name_u]?
ves/vessie
perry
v
espie
pero/pera
fallon?
Fal
Falz
Fallie
[name_u]Falcon[/name_u]
F
[name_m]Fallo[/name_m]
[name_m]Lon[/name_m]
[name_u]Lonny[/name_u]
[name_u]Loni[/name_u]
[name_f]Lolo[/name_f]
[name_u]Carter[/name_u]?
C
Car
Cart
Cartie
[name_u]Saige[/name_u]?
[name_u]Sai[/name_u]
Saigey
Sagie
Sese
Sashy
[name_u]Shea[/name_u]
[name_m]Say[/name_m]
[name_m]Gee[/name_m]
[name_f]Gigi[/name_f]
[name_f]Sisi[/name_f]
[name_f]Iris[/name_f]?
[name_u]Irie[/name_u]
Ris
Rissy
[name_u]Ira[/name_u]
[name_f]Rainbow[/name_f] 
[name_f]Icy[/name_f]
Iz
[name_u]Izzy[/name_u]
[name_f]Daisy[/name_f]?
[name_u]Day[/name_u]
[name_f]Daya[/name_f]
Aise (like the “aze” of Maze)
[name_u]Aza[/name_u]
[name_u]Ace[/name_u]
[name_f]Dee[/name_f]
[name_f]Deedee[/name_f]
Not from name syllables but - [name_f]Flower[/name_f], [name_f]Petal[/name_f].
[name_u]Ezra[/name_u]?
Ez, Ezzie, Ezza, Ezzo, [name_f]Essie[/name_f], Zars, ZoZo, [name_f]Zee[/name_f], [name_m]Zai[/name_m] ,Zed
[name_u]Elliott[/name_u]?
[name_f]El[/name_f]
Ez
[name_f]Ellie[/name_f]
[name_m]Elio[/name_m]
[name_m]Lio[/name_m]
[name_u]Lee[/name_u]
[name_f]Lottie[/name_f]
[name_u]Ottie[/name_u]
[name_m]Otto[/name_m]
[name_f]Ettie[/name_f]
[name_f]Deryn[/name_f]?
[name_f]Dee[/name_f]
[name_m]Dez[/name_m]
Ders
[name_u]Rynn[/name_u]
DR
[name_f]Didi[/name_f]
[name_f]Dede[/name_f]
Riri
Rynnie
[name_f]Twyla[/name_f]?
These are more pet names than usable nicknames but:
Tee, Wee, Twy, [name_m]Tway[/name_m], [name_u]Tay[/name_u], Tay-Tay, [name_f]Lala[/name_f], T-pain, T-tree
[name_u]Alma[/name_u]?
[name_u]Allie[/name_u]
Alm
Almie
Ma
[name_u]Mars[/name_u]
[name_f]Ama[/name_f]
[name_u]Arthur[/name_u]?
[name_m]Art[/name_m]
[name_m]Arth[/name_m]
[name_u]Artie[/name_u]
[name_m]Thor[/name_m]
[name_m]Paul[/name_m]?
[name_m]Pal[/name_m]
[name_u]Pip[/name_u]
[name_u]Paz[/name_u]
[name_u]Poe[/name_u]
Pou
P
[name_u]Kai[/name_u]?
Tough one with only three letters. I’m thinking initials. So [name_u]Kai[/name_u] [name_u]James[/name_u] would be KJ. [name_u]Kai[/name_u] [name_u]Daniel[/name_u] = KD etc.
[name_m]Just[/name_m] “K”
Kai-Kai
Kaz
[name_f]Marnie[/name_f]?
[name_f]Mara[/name_f], [name_f]Nia[/name_f], [name_f]Nini[/name_f]
[name_f]Clara[/name_f]?
[name_f]Clarrie[/name_f]
[name_f]Carrie[/name_f]
[name_u]Ari[/name_u]
[name_f]Lara[/name_f]
[name_m]Clay[/name_m]
[name_u]Clare[/name_u]
[name_f]Cornelia[/name_f]?
[name_f]Cora[/name_f]
[name_u]Cory[/name_u]
[name_f]Nell[/name_f]
[name_f]Cia[/name_f]
[name_f]Ellie[/name_f]
[name_f]Nelia[/name_f]
[name_u]Elia[/name_u]
[name_f]Lia[/name_f]
[name_u]Ciel[/name_u]
[name_f]Giselle[/name_f]?
[name_f]Fraise[/name_f]
Fra
[name_u]Ace[/name_u]
[name_u]Asa[/name_u]
Faz
[name_m]Sir[/name_m]
[name_m]Thibault[/name_m]?
Tee
[name_f]Tibby[/name_f]
Tibs
Tiz
[name_u]Beau[/name_u]
[name_u]River[/name_u]?