Declension table of mānasa

Neuter	Singular	Dual	Plural
Nominative	mānasam	mānase	mānasāni
Vocative	mānasa	mānase	mānasāni
Accusative	mānasam	mānase	mānasāni
Instrumental	mānasena	mānasābhyām	mānasaiḥ
Dative	mānasāya	mānasābhyām	mānasebhyaḥ
Ablative	mānasāt	mānasābhyām	mānasebhyaḥ
Genitive	mānasasya	mānasayoḥ	mānasānām
Locative	mānase	mānasayoḥ	mānaseṣu

Compound mānasa -

Adverb -mānasam -mānasāt