Declension table of ?purastānmukha

Neuter	Singular	Dual	Plural
Nominative	purastānmukham	purastānmukhe	purastānmukhāni
Vocative	purastānmukha	purastānmukhe	purastānmukhāni
Accusative	purastānmukham	purastānmukhe	purastānmukhāni
Instrumental	purastānmukhena	purastānmukhābhyām	purastānmukhaiḥ
Dative	purastānmukhāya	purastānmukhābhyām	purastānmukhebhyaḥ
Ablative	purastānmukhāt	purastānmukhābhyām	purastānmukhebhyaḥ
Genitive	purastānmukhasya	purastānmukhayoḥ	purastānmukhānām
Locative	purastānmukhe	purastānmukhayoḥ	purastānmukheṣu

Compound purastānmukha -

Adverb -purastānmukham -purastānmukhāt