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fìonwinemasculine noun
the
am fìon
after a preposition
an fhìon
of the
an fhìona
plural
fìontan
the (plural)
na fìontan

Every form but the headword, the genitive and the plural is worked out by the spelling rules in the grammar guide, so what you see here is what the guide teaches. Awaiting a fluent speaker’s review.