These are listed so that when you see the code at the top of a fanfic you'll know what characters are in it.
Bangel (Buffy/Angel)
Wander (Willow/Xander)
Woz (Willow/Oz)
Ruffy (Riley/Buffy)
Gred (Gunn/Fred)
Fesley (Faith/Wesley)
Bander (Buffy/Xander)
Xillow (Xander/Willow)
Spuffy (Spike/Buffy)
Spanya (Spike/Anya)
Woz (Willow/Oz)
Gillow (Giles/Willow)
Warmony (Wesley/Harmony)
Garmony (Giles/Harmony)
Funn (Faith/Gunn)
Sparmony (Spike/Harmony)
Weve (Wesley/Eve)
Winsley (Winifred/Wesley)
CC (Connor/Cordy)
Fonnor (Faith/Connor)
Cred (Connor/Fred)
Spander (Spike/Xander)
Spesley (Spike/Wesley)
Spiley (Spike/Riley)
Ozley (Oz/Wesley)
Goz (Giles/Oz)
Wiles (Wesley/Giles)
Wander (Wesley/Xander)
Wonnor (Wesley/Connor)
Spangel (Spike/Angel)
Angiles (Angel/Giles)
Agunn (Angel/Gunn)
Gonnor (Gunn/Connor)
Wuffy (Willow/Buffy)
Tillow (Tara/Willow)
Tuffy (Tara/Buffy)
Barmony (Buffy/Harmony)
Hillow (Willow/Harmony)
Fordelia (Faith/Cordelia)
Heve (Harmony/Eve)
Evillow (Willow/Eve)
Waith (Willow/Faith)
Fillow (Willow/Fred)
Frara (Fred/Tara)
Farmony (Fred/Harmony)