Definitions
In this paragraph:
(i)#
A “premium payment period” described in this clause is a 3-month period beginning with the 1st or 4th month of the 6-month additional extension period provided under this subsection.
(ii)#
The term “premium base period” means, with respect to a particular premium payment period, the period of 3 consecutive months the last of which is 4 months before the beginning of that premium payment period.