Create word variants with different suffixes

I tried to record a macro but it seemed impossible when cursor was within cell text.

Lets suppose we have a cell with this content:

πήρακε ;; ελανατατικός ;; μη προκός ;; σιφτικός

(Or it could simply be one word in the cell: παρεινός)

I want to be able to put the cursor within a given word, for example in this case ελανατατικός, and have this result:

πήρακε ;; ελανατατικός ;; ελανατατική ;; ελανατατικό ;; μη προκός ;; σιφτικός

That is, create variants with the endings ή and ό for a word ending in ός and run this macro with a keyboard shortcut.