Declension table of ?āptastoma

Neuter	Singular	Dual	Plural
Nominative	āptastomam	āptastome	āptastomāni
Vocative	āptastoma	āptastome	āptastomāni
Accusative	āptastomam	āptastome	āptastomāni
Instrumental	āptastomena	āptastomābhyām	āptastomaiḥ
Dative	āptastomāya	āptastomābhyām	āptastomebhyaḥ
Ablative	āptastomāt	āptastomābhyām	āptastomebhyaḥ
Genitive	āptastomasya	āptastomayoḥ	āptastomānām
Locative	āptastome	āptastomayoḥ	āptastomeṣu

Compound āptastoma -

Adverb -āptastomam -āptastomāt