Declension table of ?mahāsāntapana

Masculine	Singular	Dual	Plural
Nominative	mahāsāntapanaḥ	mahāsāntapanau	mahāsāntapanāḥ
Vocative	mahāsāntapana	mahāsāntapanau	mahāsāntapanāḥ
Accusative	mahāsāntapanam	mahāsāntapanau	mahāsāntapanān
Instrumental	mahāsāntapanena	mahāsāntapanābhyām	mahāsāntapanaiḥ mahāsāntapanebhiḥ
Dative	mahāsāntapanāya	mahāsāntapanābhyām	mahāsāntapanebhyaḥ
Ablative	mahāsāntapanāt	mahāsāntapanābhyām	mahāsāntapanebhyaḥ
Genitive	mahāsāntapanasya	mahāsāntapanayoḥ	mahāsāntapanānām
Locative	mahāsāntapane	mahāsāntapanayoḥ	mahāsāntapaneṣu

Compound mahāsāntapana -

Adverb -mahāsāntapanam -mahāsāntapanāt