Declension table of ?samāpayitavya

Masculine	Singular	Dual	Plural
Nominative	samāpayitavyaḥ	samāpayitavyau	samāpayitavyāḥ
Vocative	samāpayitavya	samāpayitavyau	samāpayitavyāḥ
Accusative	samāpayitavyam	samāpayitavyau	samāpayitavyān
Instrumental	samāpayitavyena	samāpayitavyābhyām	samāpayitavyaiḥ samāpayitavyebhiḥ
Dative	samāpayitavyāya	samāpayitavyābhyām	samāpayitavyebhyaḥ
Ablative	samāpayitavyāt	samāpayitavyābhyām	samāpayitavyebhyaḥ
Genitive	samāpayitavyasya	samāpayitavyayoḥ	samāpayitavyānām
Locative	samāpayitavye	samāpayitavyayoḥ	samāpayitavyeṣu

Compound samāpayitavya -

Adverb -samāpayitavyam -samāpayitavyāt