Declension table of ?gardhana

Masculine	Singular	Dual	Plural
Nominative	gardhanaḥ	gardhanau	gardhanāḥ
Vocative	gardhana	gardhanau	gardhanāḥ
Accusative	gardhanam	gardhanau	gardhanān
Instrumental	gardhanena	gardhanābhyām	gardhanaiḥ gardhanebhiḥ
Dative	gardhanāya	gardhanābhyām	gardhanebhyaḥ
Ablative	gardhanāt	gardhanābhyām	gardhanebhyaḥ
Genitive	gardhanasya	gardhanayoḥ	gardhanānām
Locative	gardhane	gardhanayoḥ	gardhaneṣu

Compound gardhana -

Adverb -gardhanam -gardhanāt