Declension table of sūtra

Neuter	Singular	Dual	Plural
Nominative	sūtram	sūtre	sūtrāṇi
Vocative	sūtra	sūtre	sūtrāṇi
Accusative	sūtram	sūtre	sūtrāṇi
Instrumental	sūtreṇa	sūtrābhyām	sūtraiḥ
Dative	sūtrāya	sūtrābhyām	sūtrebhyaḥ
Ablative	sūtrāt	sūtrābhyām	sūtrebhyaḥ
Genitive	sūtrasya	sūtrayoḥ	sūtrāṇām
Locative	sūtre	sūtrayoḥ	sūtreṣu

Compound sūtra -

Adverb -sūtram -sūtrāt