Fallow

Pope-ing
Some words can't follow the trend
Rope to Roping
Dope to Doping
Mope to Moping.
But Pope to Poping.
That's not the write sound,
Doesn't follow the rules.
Leave it to the Pope to break the rules,
Least likely character
Seems like there should be a latin phrase for that.
Bet the pope would know it.