Declension table of ?ayantra

Neuter	Singular	Dual	Plural
Nominative	ayantram	ayantre	ayantrāṇi
Vocative	ayantra	ayantre	ayantrāṇi
Accusative	ayantram	ayantre	ayantrāṇi
Instrumental	ayantreṇa	ayantrābhyām	ayantraiḥ
Dative	ayantrāya	ayantrābhyām	ayantrebhyaḥ
Ablative	ayantrāt	ayantrābhyām	ayantrebhyaḥ
Genitive	ayantrasya	ayantrayoḥ	ayantrāṇām
Locative	ayantre	ayantrayoḥ	ayantreṣu

Compound ayantra -

Adverb -ayantram -ayantrāt