Declension table of ?śastraka

Neuter	Singular	Dual	Plural
Nominative	śastrakam	śastrake	śastrakāṇi
Vocative	śastraka	śastrake	śastrakāṇi
Accusative	śastrakam	śastrake	śastrakāṇi
Instrumental	śastrakeṇa	śastrakābhyām	śastrakaiḥ
Dative	śastrakāya	śastrakābhyām	śastrakebhyaḥ
Ablative	śastrakāt	śastrakābhyām	śastrakebhyaḥ
Genitive	śastrakasya	śastrakayoḥ	śastrakāṇām
Locative	śastrake	śastrakayoḥ	śastrakeṣu

Compound śastraka -

Adverb -śastrakam -śastrakāt