Declension table of ?supātra

Masculine	Singular	Dual	Plural
Nominative	supātraḥ	supātrau	supātrāḥ
Vocative	supātra	supātrau	supātrāḥ
Accusative	supātram	supātrau	supātrān
Instrumental	supātreṇa	supātrābhyām	supātraiḥ supātrebhiḥ
Dative	supātrāya	supātrābhyām	supātrebhyaḥ
Ablative	supātrāt	supātrābhyām	supātrebhyaḥ
Genitive	supātrasya	supātrayoḥ	supātrāṇām
Locative	supātre	supātrayoḥ	supātreṣu

Compound supātra -

Adverb -supātram -supātrāt