Why are there twelve spheres - 3

To continue with the twelve spheres:

མ་འོངས་པ། ma 'ongs pa is future, the འི 'i at the end is a genitive particle that binds from right to left.

ཉེ་བར་སྤྱོད་པ། nye bar spyod pa is enjoyment,་རྣམ་པ། rnam pa is class or division.

དྲུག drug is number six. སྐྱེ་བ། skye ba is to arise, and again the 'i is a genitive particle binding from right to left.

སྒོ། sgo is a useful word, meaning door in the figurative sense, like a sense door. And you should know the 'i by now.

ཕྱིར། phyir is because. As this ends the whole sentence, we have the last letter doubling by the རོ ro construct.

All together, there's an entrance to the future sixfold experiences or enjoyments. Earlier we saw there were two parts, body (or really deha, the six objects, eye, ear, tongue, body and mental organ) and the objectification. Two times six means twelve.