Declension table of ?nyāyatantra

Neuter	Singular	Dual	Plural
Nominative	nyāyatantram	nyāyatantre	nyāyatantrāṇi
Vocative	nyāyatantra	nyāyatantre	nyāyatantrāṇi
Accusative	nyāyatantram	nyāyatantre	nyāyatantrāṇi
Instrumental	nyāyatantreṇa	nyāyatantrābhyām	nyāyatantraiḥ
Dative	nyāyatantrāya	nyāyatantrābhyām	nyāyatantrebhyaḥ
Ablative	nyāyatantrāt	nyāyatantrābhyām	nyāyatantrebhyaḥ
Genitive	nyāyatantrasya	nyāyatantrayoḥ	nyāyatantrāṇām
Locative	nyāyatantre	nyāyatantrayoḥ	nyāyatantreṣu

Compound nyāyatantra -

Adverb -nyāyatantram -nyāyatantrāt