Word / formMeaning / explanation
b-r-sh-qthe four root radicals.
اِبْرَنْشَقَinitial hamza plus inserted nūn after rāʾ.
يَبْرَنْشِقُthe nūn is retained in the imperfect.
مُبْرَنْشِقٌthe nūn is also retained in the active participle.
Mistaking the inserted nūn for an original fifth radical would produce the wrong root and wrong template. The formative addition distinguishes this pattern from the unaugmented quadriliteral.