Declension table of ?phalatantra

Neuter	Singular	Dual	Plural
Nominative	phalatantram	phalatantre	phalatantrāṇi
Vocative	phalatantra	phalatantre	phalatantrāṇi
Accusative	phalatantram	phalatantre	phalatantrāṇi
Instrumental	phalatantreṇa	phalatantrābhyām	phalatantraiḥ
Dative	phalatantrāya	phalatantrābhyām	phalatantrebhyaḥ
Ablative	phalatantrāt	phalatantrābhyām	phalatantrebhyaḥ
Genitive	phalatantrasya	phalatantrayoḥ	phalatantrāṇām
Locative	phalatantre	phalatantrayoḥ	phalatantreṣu

Compound phalatantra -

Adverb -phalatantram -phalatantrāt