“accumulating income” of a trust for a taxation year means the amount that would be the income of the trust for the year if that amount were computed(a) without reference to subparagraphs a and a.1 of the first paragraph of section 653, sections 656.2 to 656.3.1, paragraph b of section 657 and section 691;
(b) as if the trust were deducting, in computing its income for the year under paragraph a of section 657, the greatest amount it would, but for section 657.1.0.1, be entitled to deduct for the year under that paragraph;
(c) (paragraph repealed);
(d) (paragraph repealed);
(e) without reference to section 92.5.2, except where that section applies to an amount paid to a trust described in the second paragraph of section 441.1 and before the death of the spouse referred to in that paragraph;
(f) without reference to section 92.5.3.1, except where that section applies to an amount paid to a trust described in the second paragraph of section 441.2 and before the death of the spouse referred to in that paragraph;