Declension table of ?icchatva

Neuter	Singular	Dual	Plural
Nominative	icchatvam	icchatve	icchatvāni
Vocative	icchatva	icchatve	icchatvāni
Accusative	icchatvam	icchatve	icchatvāni
Instrumental	icchatvena	icchatvābhyām	icchatvaiḥ
Dative	icchatvāya	icchatvābhyām	icchatvebhyaḥ
Ablative	icchatvāt	icchatvābhyām	icchatvebhyaḥ
Genitive	icchatvasya	icchatvayoḥ	icchatvānām
Locative	icchatve	icchatvayoḥ	icchatveṣu

Compound icchatva -

Adverb -icchatvam -icchatvāt