returning, coming back, reverting (to), relating or referring (to, as a pronoun to a preceding noun), appertaining or belonging (to)

impose, levy

issued, implemented

to protect, save

several times, many times, repeatedly, often, again and again

from time to time, time after time, repeatedly, one by one

subsection

four times

(someone) be rarely seen

turn, time, occasion, time(s)

for a need to arise

come across (someone), meet, face (difficulty)

how often, how many times?