Declension table of ?vakkya

Neuter	Singular	Dual	Plural
Nominative	vakkyam	vakkye	vakkyāni
Vocative	vakkya	vakkye	vakkyāni
Accusative	vakkyam	vakkye	vakkyāni
Instrumental	vakkyena	vakkyābhyām	vakkyaiḥ
Dative	vakkyāya	vakkyābhyām	vakkyebhyaḥ
Ablative	vakkyāt	vakkyābhyām	vakkyebhyaḥ
Genitive	vakkyasya	vakkyayoḥ	vakkyānām
Locative	vakkye	vakkyayoḥ	vakkyeṣu

Compound vakkya -

Adverb -vakkyam -vakkyāt