Declension table of ?sūryasiddhāntarahasya

Neuter	Singular	Dual	Plural
Nominative	sūryasiddhāntarahasyam	sūryasiddhāntarahasye	sūryasiddhāntarahasyāni
Vocative	sūryasiddhāntarahasya	sūryasiddhāntarahasye	sūryasiddhāntarahasyāni
Accusative	sūryasiddhāntarahasyam	sūryasiddhāntarahasye	sūryasiddhāntarahasyāni
Instrumental	sūryasiddhāntarahasyena	sūryasiddhāntarahasyābhyām	sūryasiddhāntarahasyaiḥ
Dative	sūryasiddhāntarahasyāya	sūryasiddhāntarahasyābhyām	sūryasiddhāntarahasyebhyaḥ
Ablative	sūryasiddhāntarahasyāt	sūryasiddhāntarahasyābhyām	sūryasiddhāntarahasyebhyaḥ
Genitive	sūryasiddhāntarahasyasya	sūryasiddhāntarahasyayoḥ	sūryasiddhāntarahasyānām
Locative	sūryasiddhāntarahasye	sūryasiddhāntarahasyayoḥ	sūryasiddhāntarahasyeṣu

Compound sūryasiddhāntarahasya -

Adverb -sūryasiddhāntarahasyam -sūryasiddhāntarahasyāt