 From "gam-" 'go' and "dā-" 'give' ; the latter takes "-us" in the 3rd person plural.Known instances of weak stems from the Veda include "avṛjan" from "vṛj-" in the plural active, "adhithās" from "dhā-" in the singular middle, and various forms from "kṛ-" .Middle voice forms of this class are almost nonexistent in the classical period, being suppleted by those of the sibilant classes.