Looking for one handed list in SkyrimSE CK.

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I'm trying to find out what list/script Skyrim uses to determine what qualifies as one handed weapons. In specific i want to make a mod that adds some daggers to that list or if it's not possible to add certain daggers to the one handed list then just add them all. I know the Unofficial Patch adds them to the list but i'm trying to make something that doesn't require a dependent mod. 

Thanks in advance.