Ensure len(ItemTypeNames) == number of valid ItemType values
Ensure len(ItemTypeNames) == number of valid ItemType values

ke7ofi/elvish,elves/elvish,beni55/elvish,beni55/elvish,elves/elvish,elves/elvish,CodyGuo/elvish,ke7ofi/elvish,CodyGuo/elvish,elves/elvish,elves/elvish