Atthakalap and atta vs mind vs Brahma state

1. What is atthakalap? 2. So famously known as soul-> atta in Buddha's teachings .. how can one derive soul from atthakalap? 3. And what's after liberated state from atthakalap is achieved? 4. Is liberated mind impermanent too, if so then how or why not if not? I was wondering how this atthakalap works. Thanks to the anger-looking collection of few points [in this question](https://buddhism.stackexchange.com/questions/48515/do-so-called-buddhists-understand-the-term-nous-citta-mind-in-doctrine) , now I can imagine (via analysis) soul and atthakalap, and this is how I understand (or "this knowledge came like this"): Like the mind is cheated by itself via everything in form of grasping -- from point 5 from above link... > For a long time I have been cheated, tricked and hoodwinked by my citta. For when grasping, I have been grasping onto form, for when grasping, I have been grasping onto feelings, , for when grasping, I have been grasping onto perceptions, for when grasping, I have been grasping onto experiences, for when grasping, I have been grasping onto consciousness. ...and atthakalap is said to have 4 members with 4 properties and all are like beads tied to a "rope in form of mind". This mind is not the actual rope rather it tries to be the one due to ignorance(here comes the ignorance part where it can be judged clearly) and when mind stops being a rope here, these beads do not break and shatter rather the impermanent beads remain as it is but mind is freed from that. In that way, everything is impermanent... is observed. In that way, mind is liberated and is said to achieve permanence(in terms of non grasping forever, non clinging forever..). 3. But there is one more concern here, when mind is freed what happens to mind then, after? 4. What's the way to check mind's impermanence, is it's impermanence a way to express change within itself, if so wt's that change?.. :::::: or is there no such thing as mind, it's just the process within body, process of karma(action) which has started to cease after achieving that state!! 5. What's the difference b/w that state and Brahma, if any? (Note:- if reader is not feeling good then kind request to either edit it or break it into multiple sub topics with linked questions, mentioning links in them with seq. Number).