Declension table of ?yamasāna

Masculine	Singular	Dual	Plural
Nominative	yamasānaḥ	yamasānau	yamasānāḥ
Vocative	yamasāna	yamasānau	yamasānāḥ
Accusative	yamasānam	yamasānau	yamasānān
Instrumental	yamasānena	yamasānābhyām	yamasānaiḥ yamasānebhiḥ
Dative	yamasānāya	yamasānābhyām	yamasānebhyaḥ
Ablative	yamasānāt	yamasānābhyām	yamasānebhyaḥ
Genitive	yamasānasya	yamasānayoḥ	yamasānānām
Locative	yamasāne	yamasānayoḥ	yamasāneṣu

Compound yamasāna -

Adverb -yamasānam -yamasānāt