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gàrradhgardenmasculine noun
the
an gàrradh
after a preposition
a' ghàrradh
of the
a' ghàrraidh
plural
gàrraidhean
the (plural)
na gàrraidhean

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.