Hello Anshu64,
1. I do not know of such an “elemental analysis” of anicca (or dukkha, anatta, or the Four Noble Truths) in Abhidhamma. Do you know? If so, please give references in the Abhidhamma Pitaka.
2. If you cannot provide such references, do you know why such analyses are not there in the Abhidhamma Pitaka?