Scoring: The team scoring the greater number of points during the regulation and extra periods shall be declared the winner. There shall be an equal number of series, as defined in (e) above, in each extra period, except if Team B scores during a period other than on the try. Beginning with the third extra period, teams scoring a touchdown must attempt a two-point try. A one-point try by Team A (although not illegal) will not score a point.
I could not find anywhere else in the section pertaining to extra periods that the games ends after a specified number of extra periods.
Wittenberg Takes on Capital in the first round of the NCAA Div III playoffs. GO TIGERS!!