Declension table of ?tṛtīyāsamāsa

Masculine	Singular	Dual	Plural
Nominative	tṛtīyāsamāsaḥ	tṛtīyāsamāsau	tṛtīyāsamāsāḥ
Vocative	tṛtīyāsamāsa	tṛtīyāsamāsau	tṛtīyāsamāsāḥ
Accusative	tṛtīyāsamāsam	tṛtīyāsamāsau	tṛtīyāsamāsān
Instrumental	tṛtīyāsamāsena	tṛtīyāsamāsābhyām	tṛtīyāsamāsaiḥ tṛtīyāsamāsebhiḥ
Dative	tṛtīyāsamāsāya	tṛtīyāsamāsābhyām	tṛtīyāsamāsebhyaḥ
Ablative	tṛtīyāsamāsāt	tṛtīyāsamāsābhyām	tṛtīyāsamāsebhyaḥ
Genitive	tṛtīyāsamāsasya	tṛtīyāsamāsayoḥ	tṛtīyāsamāsānām
Locative	tṛtīyāsamāse	tṛtīyāsamāsayoḥ	tṛtīyāsamāseṣu

Compound tṛtīyāsamāsa -

Adverb -tṛtīyāsamāsam -tṛtīyāsamāsāt