Declension table of ?saptahautra

Neuter	Singular	Dual	Plural
Nominative	saptahautram	saptahautre	saptahautrāṇi
Vocative	saptahautra	saptahautre	saptahautrāṇi
Accusative	saptahautram	saptahautre	saptahautrāṇi
Instrumental	saptahautreṇa	saptahautrābhyām	saptahautraiḥ
Dative	saptahautrāya	saptahautrābhyām	saptahautrebhyaḥ
Ablative	saptahautrāt	saptahautrābhyām	saptahautrebhyaḥ
Genitive	saptahautrasya	saptahautrayoḥ	saptahautrāṇām
Locative	saptahautre	saptahautrayoḥ	saptahautreṣu

Compound saptahautra -

Adverb -saptahautram -saptahautrāt