There are at least three words that can follow RETREADING.
I've been thinking of it for a while, and I just came up with gradienters.
Gradienter is listed as a word by M-W, but one that one has to pay for to see whose definition.
Gradienters isn't, even though that's a logical plural.
There are at least seven words that can follow FLOATER.
There are at least three words that can follow FORESTIAL.
Good job, drom. (The other two words were safflorite and reflations.)
There are at least two words that can follow FORTALICES.