Declension table of maithuna

Masculine	Singular	Dual	Plural
Nominative	maithunaḥ	maithunau	maithunāḥ
Vocative	maithuna	maithunau	maithunāḥ
Accusative	maithunam	maithunau	maithunān
Instrumental	maithunena	maithunābhyām	maithunaiḥ maithunebhiḥ
Dative	maithunāya	maithunābhyām	maithunebhyaḥ
Ablative	maithunāt	maithunābhyām	maithunebhyaḥ
Genitive	maithunasya	maithunayoḥ	maithunānām
Locative	maithune	maithunayoḥ	maithuneṣu

Compound maithuna -

Adverb -maithunam -maithunāt