The passive “ intensive ” form:
You can identify this passive version of פִּעֵל by applying the following rules of thumb:
There is almost always a dot of emphasis – a דָּגֵשׁ – that appears in the second letter of the root. Two exceptions: when the root is composed of four letters (usually a foreign root), and when the second root letter makes a guttural sound, making such emphasis difficult for native speakers to pronounce (such as the letter ע in פֻּעַל).
In the past tense, the three letters of the root appear first in the word, but unlike the קל form, there is almost always a דגש in the second letter of the root, as in הַכֶּסֶף שֻׁלָּם (the money was paid).
In all three major tenses, there is an oo-ah or oh-ah vowel rhyming pattern.
Witness these patterns as you review the chart below, which lays out all the possibilities of the verb מְדֻבָּר (spoken of) in past, present and future tenses:
ציווי – imperative
עתיד – future
הווה – present
עבר – past
As in any spoken language, things that are difficult for native speakers to pronounce get altered. So there will be roots that don’t fit into the neat table of פועל above.