Declension table of ?pitṛdevatya

Neuter	Singular	Dual	Plural
Nominative	pitṛdevatyam	pitṛdevatye	pitṛdevatyāni
Vocative	pitṛdevatya	pitṛdevatye	pitṛdevatyāni
Accusative	pitṛdevatyam	pitṛdevatye	pitṛdevatyāni
Instrumental	pitṛdevatyena	pitṛdevatyābhyām	pitṛdevatyaiḥ
Dative	pitṛdevatyāya	pitṛdevatyābhyām	pitṛdevatyebhyaḥ
Ablative	pitṛdevatyāt	pitṛdevatyābhyām	pitṛdevatyebhyaḥ
Genitive	pitṛdevatyasya	pitṛdevatyayoḥ	pitṛdevatyānām
Locative	pitṛdevatye	pitṛdevatyayoḥ	pitṛdevatyeṣu

Compound pitṛdevatya -

Adverb -pitṛdevatyam -pitṛdevatyāt