Declension table of sastrīka

Neuter	Singular	Dual	Plural
Nominative	sastrīkam	sastrīke	sastrīkāṇi
Vocative	sastrīka	sastrīke	sastrīkāṇi
Accusative	sastrīkam	sastrīke	sastrīkāṇi
Instrumental	sastrīkeṇa	sastrīkābhyām	sastrīkaiḥ
Dative	sastrīkāya	sastrīkābhyām	sastrīkebhyaḥ
Ablative	sastrīkāt	sastrīkābhyām	sastrīkebhyaḥ
Genitive	sastrīkasya	sastrīkayoḥ	sastrīkāṇām
Locative	sastrīke	sastrīkayoḥ	sastrīkeṣu

Compound sastrīka -

Adverb -sastrīkam -sastrīkāt