i. the aggregate of all amounts each of which is the amount by which(1) the amount deducted under paragraph b of section 418.31 in respect of a disposition in the year by the original owner, exceeds
(2) the amount designated by the original owner in prescribed form filed with the Minister within six months after the end of the year in respect of an amount determined under subparagraph l, and
ii. the aggregate of(1) the amount deducted by the original owner for the year under section 400 or 401, and
(2) the amount that would be determined in respect of the original owner for the year under paragraph d of section 330 if the aggregate last referred to therein were not taken into account;