You are given an agriculture dataset, agriculture.csv$.$ Each row of the dataset represents a particular agriculture item produced in a given country and the amount of production between the years $1965-2017.$

The Item column contains the name of the agriculture item while the ItemCode column contains the corresponding integer code representing the item.

All but $2$ of the agriculture items have a unique item code. Which $2$ agriculture items have more than one corresponding item code in the dataset?