Declension table of ?śivatantra

Neuter	Singular	Dual	Plural
Nominative	śivatantram	śivatantre	śivatantrāṇi
Vocative	śivatantra	śivatantre	śivatantrāṇi
Accusative	śivatantram	śivatantre	śivatantrāṇi
Instrumental	śivatantreṇa	śivatantrābhyām	śivatantraiḥ
Dative	śivatantrāya	śivatantrābhyām	śivatantrebhyaḥ
Ablative	śivatantrāt	śivatantrābhyām	śivatantrebhyaḥ
Genitive	śivatantrasya	śivatantrayoḥ	śivatantrāṇām
Locative	śivatantre	śivatantrayoḥ	śivatantreṣu

Compound śivatantra -

Adverb -śivatantram -śivatantrāt