@Embodied: I am assuming that this is your description of Tilakkhana in the “mundane sense”, that you promised to do under another topic.
So, you do not believe in rebirth, but are trying to explain Tilakkhana within that framework.
Now think about the following situation. One is born healthy into a wealthy family. He lives for, say about 50 years, and dies in a sudden heart attack. During his life, he enjoyed a “full life” and also did not engage in any immoral activities (there was no need; he could have whatever he wanted and he did not need to make money). He of course enjoyed all sense pleasures approved by the norms of the society (good food, had a good married life, had good children, no illnesses, etc).
So, if he now dies suddenly, there is no more suffering for him, other than possibly some discomfort at the moment of death (because within your framework, there is no rebirth). So, within your framework, can you describe the anicca, dukkha, anatta that was experienced by this person? Please use simple terms.There is no need to use philosophical phrases that are meaningless.