Declension table of ?sūryatvaca

Masculine	Singular	Dual	Plural
Nominative	sūryatvacaḥ	sūryatvacau	sūryatvacāḥ
Vocative	sūryatvaca	sūryatvacau	sūryatvacāḥ
Accusative	sūryatvacam	sūryatvacau	sūryatvacān
Instrumental	sūryatvacena	sūryatvacābhyām	sūryatvacaiḥ sūryatvacebhiḥ
Dative	sūryatvacāya	sūryatvacābhyām	sūryatvacebhyaḥ
Ablative	sūryatvacāt	sūryatvacābhyām	sūryatvacebhyaḥ
Genitive	sūryatvacasya	sūryatvacayoḥ	sūryatvacānām
Locative	sūryatvace	sūryatvacayoḥ	sūryatvaceṣu

Compound sūryatvaca -

Adverb -sūryatvacam -sūryatvacāt