Declension table of ?saṃvṛtamantra

Neuter	Singular	Dual	Plural
Nominative	saṃvṛtamantram	saṃvṛtamantre	saṃvṛtamantrāṇi
Vocative	saṃvṛtamantra	saṃvṛtamantre	saṃvṛtamantrāṇi
Accusative	saṃvṛtamantram	saṃvṛtamantre	saṃvṛtamantrāṇi
Instrumental	saṃvṛtamantreṇa	saṃvṛtamantrābhyām	saṃvṛtamantraiḥ
Dative	saṃvṛtamantrāya	saṃvṛtamantrābhyām	saṃvṛtamantrebhyaḥ
Ablative	saṃvṛtamantrāt	saṃvṛtamantrābhyām	saṃvṛtamantrebhyaḥ
Genitive	saṃvṛtamantrasya	saṃvṛtamantrayoḥ	saṃvṛtamantrāṇām
Locative	saṃvṛtamantre	saṃvṛtamantrayoḥ	saṃvṛtamantreṣu

Compound saṃvṛtamantra -

Adverb -saṃvṛtamantram -saṃvṛtamantrāt