Declension table of ?vipulaka

Neuter	Singular	Dual	Plural
Nominative	vipulakam	vipulake	vipulakāni
Vocative	vipulaka	vipulake	vipulakāni
Accusative	vipulakam	vipulake	vipulakāni
Instrumental	vipulakena	vipulakābhyām	vipulakaiḥ
Dative	vipulakāya	vipulakābhyām	vipulakebhyaḥ
Ablative	vipulakāt	vipulakābhyām	vipulakebhyaḥ
Genitive	vipulakasya	vipulakayoḥ	vipulakānām
Locative	vipulake	vipulakayoḥ	vipulakeṣu

Compound vipulaka -

Adverb -vipulakam -vipulakāt