Declension table of ?picchaka

Masculine	Singular	Dual	Plural
Nominative	picchakaḥ	picchakau	picchakāḥ
Vocative	picchaka	picchakau	picchakāḥ
Accusative	picchakam	picchakau	picchakān
Instrumental	picchakena	picchakābhyām	picchakaiḥ picchakebhiḥ
Dative	picchakāya	picchakābhyām	picchakebhyaḥ
Ablative	picchakāt	picchakābhyām	picchakebhyaḥ
Genitive	picchakasya	picchakayoḥ	picchakānām
Locative	picchake	picchakayoḥ	picchakeṣu

Compound picchaka -

Adverb -picchakam -picchakāt