Declension table of ?pakṣāvasara

Masculine	Singular	Dual	Plural
Nominative	pakṣāvasaraḥ	pakṣāvasarau	pakṣāvasarāḥ
Vocative	pakṣāvasara	pakṣāvasarau	pakṣāvasarāḥ
Accusative	pakṣāvasaram	pakṣāvasarau	pakṣāvasarān
Instrumental	pakṣāvasareṇa	pakṣāvasarābhyām	pakṣāvasaraiḥ pakṣāvasarebhiḥ
Dative	pakṣāvasarāya	pakṣāvasarābhyām	pakṣāvasarebhyaḥ
Ablative	pakṣāvasarāt	pakṣāvasarābhyām	pakṣāvasarebhyaḥ
Genitive	pakṣāvasarasya	pakṣāvasarayoḥ	pakṣāvasarāṇām
Locative	pakṣāvasare	pakṣāvasarayoḥ	pakṣāvasareṣu

Compound pakṣāvasara -

Adverb -pakṣāvasaram -pakṣāvasarāt