Declension table of ?anupāsana

Neuter	Singular	Dual	Plural
Nominative	anupāsanam	anupāsane	anupāsanāni
Vocative	anupāsana	anupāsane	anupāsanāni
Accusative	anupāsanam	anupāsane	anupāsanāni
Instrumental	anupāsanena	anupāsanābhyām	anupāsanaiḥ
Dative	anupāsanāya	anupāsanābhyām	anupāsanebhyaḥ
Ablative	anupāsanāt	anupāsanābhyām	anupāsanebhyaḥ
Genitive	anupāsanasya	anupāsanayoḥ	anupāsanānām
Locative	anupāsane	anupāsanayoḥ	anupāsaneṣu

Compound anupāsana -

Adverb -anupāsanam -anupāsanāt