Declension table of ?suptastha

Masculine	Singular	Dual	Plural
Nominative	suptasthaḥ	suptasthau	suptasthāḥ
Vocative	suptastha	suptasthau	suptasthāḥ
Accusative	suptastham	suptasthau	suptasthān
Instrumental	suptasthena	suptasthābhyām	suptasthaiḥ suptasthebhiḥ
Dative	suptasthāya	suptasthābhyām	suptasthebhyaḥ
Ablative	suptasthāt	suptasthābhyām	suptasthebhyaḥ
Genitive	suptasthasya	suptasthayoḥ	suptasthānām
Locative	suptasthe	suptasthayoḥ	suptastheṣu

Compound suptastha -

Adverb -suptastham -suptasthāt