Declension table of ?peki

Masculine	Singular	Dual	Plural
Nominative	pekiḥ	pekī	pekayaḥ
Vocative	peke	pekī	pekayaḥ
Accusative	pekim	pekī	pekīn
Instrumental	pekinā	pekibhyām	pekibhiḥ
Dative	pekaye	pekibhyām	pekibhyaḥ
Ablative	pekeḥ	pekibhyām	pekibhyaḥ
Genitive	pekeḥ	pekyoḥ	pekīnām
Locative	pekau	pekyoḥ	pekiṣu

Compound peki -

Adverb -peki