Declension table of ?suvaca

Neuter	Singular	Dual	Plural
Nominative	suvacam	suvace	suvacāni
Vocative	suvaca	suvace	suvacāni
Accusative	suvacam	suvace	suvacāni
Instrumental	suvacena	suvacābhyām	suvacaiḥ
Dative	suvacāya	suvacābhyām	suvacebhyaḥ
Ablative	suvacāt	suvacābhyām	suvacebhyaḥ
Genitive	suvacasya	suvacayoḥ	suvacānām
Locative	suvace	suvacayoḥ	suvaceṣu

Compound suvaca -

Adverb -suvacam -suvacāt