Declension table of ?susthamānasa

Neuter	Singular	Dual	Plural
Nominative	susthamānasam	susthamānase	susthamānasāni
Vocative	susthamānasa	susthamānase	susthamānasāni
Accusative	susthamānasam	susthamānase	susthamānasāni
Instrumental	susthamānasena	susthamānasābhyām	susthamānasaiḥ
Dative	susthamānasāya	susthamānasābhyām	susthamānasebhyaḥ
Ablative	susthamānasāt	susthamānasābhyām	susthamānasebhyaḥ
Genitive	susthamānasasya	susthamānasayoḥ	susthamānasānām
Locative	susthamānase	susthamānasayoḥ	susthamānaseṣu

Compound susthamānasa -

Adverb -susthamānasam -susthamānasāt