Declension table of ?taivraka

Neuter	Singular	Dual	Plural
Nominative	taivrakam	taivrake	taivrakāṇi
Vocative	taivraka	taivrake	taivrakāṇi
Accusative	taivrakam	taivrake	taivrakāṇi
Instrumental	taivrakeṇa	taivrakābhyām	taivrakaiḥ
Dative	taivrakāya	taivrakābhyām	taivrakebhyaḥ
Ablative	taivrakāt	taivrakābhyām	taivrakebhyaḥ
Genitive	taivrakasya	taivrakayoḥ	taivrakāṇām
Locative	taivrake	taivrakayoḥ	taivrakeṣu

Compound taivraka -

Adverb -taivrakam -taivrakāt