Declension table of ?picchana

Neuter	Singular	Dual	Plural
Nominative	picchanam	picchane	picchanāni
Vocative	picchana	picchane	picchanāni
Accusative	picchanam	picchane	picchanāni
Instrumental	picchanena	picchanābhyām	picchanaiḥ
Dative	picchanāya	picchanābhyām	picchanebhyaḥ
Ablative	picchanāt	picchanābhyām	picchanebhyaḥ
Genitive	picchanasya	picchanayoḥ	picchanānām
Locative	picchane	picchanayoḥ	picchaneṣu

Compound picchana -

Adverb -picchanam -picchanāt