Declension table of ?sumṛga

Neuter	Singular	Dual	Plural
Nominative	sumṛgam	sumṛge	sumṛgāṇi
Vocative	sumṛga	sumṛge	sumṛgāṇi
Accusative	sumṛgam	sumṛge	sumṛgāṇi
Instrumental	sumṛgeṇa	sumṛgābhyām	sumṛgaiḥ
Dative	sumṛgāya	sumṛgābhyām	sumṛgebhyaḥ
Ablative	sumṛgāt	sumṛgābhyām	sumṛgebhyaḥ
Genitive	sumṛgasya	sumṛgayoḥ	sumṛgāṇām
Locative	sumṛge	sumṛgayoḥ	sumṛgeṣu

Compound sumṛga -

Adverb -sumṛgam -sumṛgāt