Declension table of ?siddhasaṅkalpa

Masculine	Singular	Dual	Plural
Nominative	siddhasaṅkalpaḥ	siddhasaṅkalpau	siddhasaṅkalpāḥ
Vocative	siddhasaṅkalpa	siddhasaṅkalpau	siddhasaṅkalpāḥ
Accusative	siddhasaṅkalpam	siddhasaṅkalpau	siddhasaṅkalpān
Instrumental	siddhasaṅkalpena	siddhasaṅkalpābhyām	siddhasaṅkalpaiḥ siddhasaṅkalpebhiḥ
Dative	siddhasaṅkalpāya	siddhasaṅkalpābhyām	siddhasaṅkalpebhyaḥ
Ablative	siddhasaṅkalpāt	siddhasaṅkalpābhyām	siddhasaṅkalpebhyaḥ
Genitive	siddhasaṅkalpasya	siddhasaṅkalpayoḥ	siddhasaṅkalpānām
Locative	siddhasaṅkalpe	siddhasaṅkalpayoḥ	siddhasaṅkalpeṣu

Compound siddhasaṅkalpa -

Adverb -siddhasaṅkalpam -siddhasaṅkalpāt