Declension table of ?ṣāṇmāsya

Masculine	Singular	Dual	Plural
Nominative	ṣāṇmāsyaḥ	ṣāṇmāsyau	ṣāṇmāsyāḥ
Vocative	ṣāṇmāsya	ṣāṇmāsyau	ṣāṇmāsyāḥ
Accusative	ṣāṇmāsyam	ṣāṇmāsyau	ṣāṇmāsyān
Instrumental	ṣāṇmāsyena	ṣāṇmāsyābhyām	ṣāṇmāsyaiḥ ṣāṇmāsyebhiḥ
Dative	ṣāṇmāsyāya	ṣāṇmāsyābhyām	ṣāṇmāsyebhyaḥ
Ablative	ṣāṇmāsyāt	ṣāṇmāsyābhyām	ṣāṇmāsyebhyaḥ
Genitive	ṣāṇmāsyasya	ṣāṇmāsyayoḥ	ṣāṇmāsyānām
Locative	ṣāṇmāsye	ṣāṇmāsyayoḥ	ṣāṇmāsyeṣu

Compound ṣāṇmāsya -

Adverb -ṣāṇmāsyam -ṣāṇmāsyāt