Declension table of ?gurusthira

Masculine	Singular	Dual	Plural
Nominative	gurusthiraḥ	gurusthirau	gurusthirāḥ
Vocative	gurusthira	gurusthirau	gurusthirāḥ
Accusative	gurusthiram	gurusthirau	gurusthirān
Instrumental	gurusthireṇa	gurusthirābhyām	gurusthiraiḥ gurusthirebhiḥ
Dative	gurusthirāya	gurusthirābhyām	gurusthirebhyaḥ
Ablative	gurusthirāt	gurusthirābhyām	gurusthirebhyaḥ
Genitive	gurusthirasya	gurusthirayoḥ	gurusthirāṇām
Locative	gurusthire	gurusthirayoḥ	gurusthireṣu

Compound gurusthira -

Adverb -gurusthiram -gurusthirāt