Declension table of ?ṣaṇmāsya

Masculine	Singular	Dual	Plural
Nominative	ṣaṇmāsyaḥ	ṣaṇmāsyau	ṣaṇmāsyāḥ
Vocative	ṣaṇmāsya	ṣaṇmāsyau	ṣaṇmāsyāḥ
Accusative	ṣaṇmāsyam	ṣaṇmāsyau	ṣaṇmāsyān
Instrumental	ṣaṇmāsyena	ṣaṇmāsyābhyām	ṣaṇmāsyaiḥ ṣaṇmāsyebhiḥ
Dative	ṣaṇmāsyāya	ṣaṇmāsyābhyām	ṣaṇmāsyebhyaḥ
Ablative	ṣaṇmāsyāt	ṣaṇmāsyābhyām	ṣaṇmāsyebhyaḥ
Genitive	ṣaṇmāsyasya	ṣaṇmāsyayoḥ	ṣaṇmāsyānām
Locative	ṣaṇmāsye	ṣaṇmāsyayoḥ	ṣaṇmāsyeṣu

Compound ṣaṇmāsya -

Adverb -ṣaṇmāsyam -ṣaṇmāsyāt