Declension table of ?mahārambha

Neuter	Singular	Dual	Plural
Nominative	mahārambham	mahārambhe	mahārambhāṇi
Vocative	mahārambha	mahārambhe	mahārambhāṇi
Accusative	mahārambham	mahārambhe	mahārambhāṇi
Instrumental	mahārambheṇa	mahārambhābhyām	mahārambhaiḥ
Dative	mahārambhāya	mahārambhābhyām	mahārambhebhyaḥ
Ablative	mahārambhāt	mahārambhābhyām	mahārambhebhyaḥ
Genitive	mahārambhasya	mahārambhayoḥ	mahārambhāṇām
Locative	mahārambhe	mahārambhayoḥ	mahārambheṣu

Compound mahārambha -

Adverb -mahārambham -mahārambhāt