Declension table of ?upānasyaka

Masculine	Singular	Dual	Plural
Nominative	upānasyakaḥ	upānasyakau	upānasyakāḥ
Vocative	upānasyaka	upānasyakau	upānasyakāḥ
Accusative	upānasyakam	upānasyakau	upānasyakān
Instrumental	upānasyakena	upānasyakābhyām	upānasyakaiḥ upānasyakebhiḥ
Dative	upānasyakāya	upānasyakābhyām	upānasyakebhyaḥ
Ablative	upānasyakāt	upānasyakābhyām	upānasyakebhyaḥ
Genitive	upānasyakasya	upānasyakayoḥ	upānasyakānām
Locative	upānasyake	upānasyakayoḥ	upānasyakeṣu

Compound upānasyaka -

Adverb -upānasyakam -upānasyakāt