Declension table of ?dvaipaka

Neuter	Singular	Dual	Plural
Nominative	dvaipakam	dvaipake	dvaipakāni
Vocative	dvaipaka	dvaipake	dvaipakāni
Accusative	dvaipakam	dvaipake	dvaipakāni
Instrumental	dvaipakena	dvaipakābhyām	dvaipakaiḥ
Dative	dvaipakāya	dvaipakābhyām	dvaipakebhyaḥ
Ablative	dvaipakāt	dvaipakābhyām	dvaipakebhyaḥ
Genitive	dvaipakasya	dvaipakayoḥ	dvaipakānām
Locative	dvaipake	dvaipakayoḥ	dvaipakeṣu

Compound dvaipaka -

Adverb -dvaipakam -dvaipakāt