Here are the animation tables for the player. The spcial animation string will refer to one of the animations inside.
records/creatures/pc/anm_malepc.dbr
records/creatures/pc/anm_femalepc.dbr
They are referenced in the file for player characters. It is similar for monster files.
You can also preview the animation with the Viewer tool in GD folder. First select the player mesh file then you will be able to see and play animations.
If you can’t find an animation that works for your case you are getting in the territory of creating your onw. Link to player model, but this is a far as I can help for animation creation 