There are at least two words that can follow REPARATIONS.
(The other word that could have followed reparations was proletarians.)
There is at least one word that can follow PREPARATIONS.
Add an I to PREPARATIONS to get the next word.
There is at least one word that can follow PREASPIRATION. (Add a T.)
There are at least two words that can follow ARGUMENTS.
There is at least one word that can follow AUGMENTERS.
I found two words but they are not listed at m w