22. Except where a contributor dies, if a contributor fails to make one or more payments under the terms and conditions by which he is bound, he shall make those payments in any of the following manners, at his option: (1) prior to the end of the initial period over which payments were spread:
(a) in one payment;
(b) by spreading those payments over the rest of the initial period;
(2) by spreading those payments over a period longer than the initial period, without exceeding the period during which the contributor failed to make those payments.