Declension table of ?hradayya

Neuter	Singular	Dual	Plural
Nominative	hradayyam	hradayye	hradayyāni
Vocative	hradayya	hradayye	hradayyāni
Accusative	hradayyam	hradayye	hradayyāni
Instrumental	hradayyena	hradayyābhyām	hradayyaiḥ
Dative	hradayyāya	hradayyābhyām	hradayyebhyaḥ
Ablative	hradayyāt	hradayyābhyām	hradayyebhyaḥ
Genitive	hradayyasya	hradayyayoḥ	hradayyānām
Locative	hradayye	hradayyayoḥ	hradayyeṣu

Compound hradayya -

Adverb -hradayyam -hradayyāt