The Pealal is a rare stem formation that is similar to the Piel and expresses the same range of meanings.
The Pealal stem is a variation of the Piel and has potential to express the same range of verbal action. The Pealal stem is formed from the Piel stem by simply repeating both the 2nd and 3rd radicals, thus making a verb that appears to have 5 consonants. It is an extremely rare stem formation in Biblical Hebrew.
It is recommended to always check a dictionary or lexicon for the meaning of a specific verb, because this stem may express many different kinds of action in different contexts.
In the following example, the root is סחר, and the 2nd and 3rd radicals repeat.
לִבִּ֣י סְ֭חַרְחַר עֲזָבַ֣נִי כֹחִ֑י
libbi seharhar ‘azavani khohi
my-heart pounds it-fades my-strength
my heart pounds, my strength fades