This word has a 4-letter root. The second and third letters of the root occupy the place reserved for the middle radical in the inflection model.
Singular
Plural
Masculine
Feminine
Masculine
Feminine
תִּפְעוּלִי
tif'uli
operational
תִּפְעוּלִית
tif'ulit
operational
תִּפְעוּלִיִּים
tif'uliyim
operational
תִּפְעוּלִיּוֹת
tif'uliyot
operational
Singular
Masculine
תִּפְעוּלִי
tif'uli
operational
Feminine
תִּפְעוּלִית
tif'ulit
operational
Plural
Masculine
תִּפְעוּלִיִּים
tif'uliyim
operational
Feminine
תִּפְעוּלִיּוֹת
tif'uliyot
operational