(chiefly Old Egyptian and Late Egyptian)Forms the imperative of biliteral verbs, and in Late Egyptian also of former triliteral and third-weak verbs that have been reduced to two radicals. Optional in Late Egyptian.
(Late Egyptian)Forms the participles and relative forms of fientive (non-adjectival) biliteral verbs, triliteral and third-weak verbs that have been reduced to biliterals through sound change, fourth-weak verbs, and a few other triliteral verbs.[since the 19th Dynasty]
James P[eter] Allen (2010) Middle Egyptian: An Introduction to the Language and Culture of Hieroglyphs, 2nd edition, Cambridge: Cambridge University Press, →ISBN, pages 190, 249.
Junge, Friedrich (2005) Late Egyptian Grammar: An Introduction, second English edition, Oxford: Griffith Institute, pages 66, 78