Declension table of ?trapta

Masculine	Singular	Dual	Plural
Nominative	traptaḥ	traptau	traptāḥ
Vocative	trapta	traptau	traptāḥ
Accusative	traptam	traptau	traptān
Instrumental	traptena	traptābhyām	traptaiḥ traptebhiḥ
Dative	traptāya	traptābhyām	traptebhyaḥ
Ablative	traptāt	traptābhyām	traptebhyaḥ
Genitive	traptasya	traptayoḥ	traptānām
Locative	trapte	traptayoḥ	trapteṣu

Compound trapta -

Adverb -traptam -traptāt