Declension table of ?sāpya

Neuter	Singular	Dual	Plural
Nominative	sāpyam	sāpye	sāpyāni
Vocative	sāpya	sāpye	sāpyāni
Accusative	sāpyam	sāpye	sāpyāni
Instrumental	sāpyena	sāpyābhyām	sāpyaiḥ
Dative	sāpyāya	sāpyābhyām	sāpyebhyaḥ
Ablative	sāpyāt	sāpyābhyām	sāpyebhyaḥ
Genitive	sāpyasya	sāpyayoḥ	sāpyānām
Locative	sāpye	sāpyayoḥ	sāpyeṣu

Compound sāpya -

Adverb -sāpyam -sāpyāt