Is There a Productive Process for Producing Prepositions?

It seems a little odd to me that he has a a productive process for producing prepositions but I guess that's just my English brain objecting because, well, I don't know. English makes new prepositions all the time. Oh, and noun can be turned into a preposition by attaching one of the now I understand. So... That makes sense. In the Y-faces in isolation it is not possible to tell the difference between complex preposition plus compound and a simple prepositionplus compound noun. Okay. Complex preposition is a freestanding phonological room unit. And we have stuff like that - behind is from behind is flique. It's an aspir