Looking for Infinite HP Washing Help

Hello fellow hardcore washers I have a question for you.
Actually it's not so much of a question, I just would like to have my thought process proofread.
From what I understand, regular HP washing is as follows:

(As I am a thief with super high base int, all below examples will assume I have enough excess MP to perform the actions and that my prime stat is LUK)

1. 1 Fresh AP into HP (Gain 16~20 HP)
2. Drag 1 AP from MP into LUK (Lose 12 MP, Gain 1 LUK)

This makes total sense to me, as you are investing 1 point into HP then pulling out a MP to fill back LUK.
If I understand correctly, you can never pull MP to fill into LUK if you don't put a point into HP first.
In other words, assuming you have an access 3k MP, you can't just drag all of those excess MP into LUK without putting fresh AP into HP. (aka trying to do 2. without doing 1.)

If all my above assumptions are correct, then I would need some explanations on how MP washing/infinite HP washing works.

From the people I've talked to (1) and the guides I've seen (also 1),
They all seem to imply the following:

Assuming we're washing in bulk and not AP per AP,

1. For a set amount of levels (say 30), dump all Fresh AP into MP except for 1
2. Once the 30 levels are up, stop leveling for simplicity's sake
3. Put that 1 Fresh AP you saved into HP
4. Now you may begin to wash "infinitely"

There are then two things needed to be done.
a) Drag back all the MP you originally invested from fresh level-up back into LUK (30 levels dumped into MP except for 1 which is used for HP, (30*5)-1=149 AP back into LUK)
b) Drag excess MP into HP with resets until your MP pool hits minimum* (this is what I don't understand, will revisit this later) OR, if doing this step first, calculate how much excess MP you can drag into HP so you don't accidentally reset "fresh" stats

After talking to the person and reading Hiyo's Guide to Infinity Washing (https://forum.maplelegends.com/index.php?threads/how-to-wash-to-infinity.17229/), I realized they both have different orders for (a) and (b). From that, I assume you are allowed to do them in whichever order you prefer. Personally I prefer Hiyo's method (a then b), as this way I wouldn't have to calculate how much MP I'm allowed to drag into HP, because all my "fresh" AP have already been dragged back into LUK.

If the above reasoning is correct, then please allow me to revisit (b), where I drag my excess MP into HP until pool hits minimum, so pretty much an infinite cycle of washing while keeping my level stationary.

I don't understand how the game allows for this?

Under the same concept, then, instead of cycling dragging MP into HP, wouldn't you be able to drag MP into LUK for infinite LUK?

For regular HP washing, you must click 1 fresh AP into HP in order to drag MP into LUK.
For infinity HP washing, it seems as if, as long as you invested 1 initial fresh AP into HP, you're allowed to drag as many MP into HP as you want until your pool hits minimum. Is this true?

To end my opening post, I apologize if my thoughts seem scattered.
I wrote this in a brain-dump sense, as really I just want to understand how infinity washing works.

Please correct all mistakes I made, or let me know if my assumptions are correct.
Thank you and thanks for reading

P.S. For the people too lazy to click Hiyo 's link above, here is a screenshot of what has me confused:

 

Thanks for your replies Hiyo and Hyoon
I'm trying to thoroughly understand this so I'm just going to cut straight to the point,
apologize for the bluntness in advance.

The above I already know

This above is just the regular HP washing method

This above has me confused. Did you make a typo?
Why would I ever take out a prime stat to put into HP?
As far as I'm aware of, the only two occasions where I'd be adding a point to HP is
1. Fresh AP from Level up
2. Take out from MP to put into HP
Washing a prime stat into HP... if I recall correctly that doesn't do anything aside from giving you +16 HP and -1 Prime Stat.

With that being said,
I assume you meant "Level up AP > Put into HP" in the initial process.

This I know,
but as with the initial intention of this post,
I'm trying to understand the mechanic behind it.
now to Hiyo's reply:

This makes sense in theory, but by personal experience on a character I previously HP washed on (with the regular method), I could not transfer any of my excess MP into HP even though I had an excess 400MP sitting above my minimum and have washed many times (the reason I had MP sitting waiting is because I haven't invested enough points into HP for me to wash them 1 for 1).

Now hear me out... This is what I assume to be going on, in the easiest way I can put into words:

Could it be possible that there are 4 types of mana?

a) Base minimum mana. Mana gained naturally through leveling omitting all the int.
b) Base Level-Up INT Mana. Mana gained through leveling up with bonus base INT stats.
c) Base added Mana. Mana gained through adding a point into MP omitting INT. (Always a flat 12)
d) Added INT Mana. Total mana gained through adding a point into MP minus Base added Mana. (Value of mana gained from adding a point into MP minus value C)

For this conversation (a) is irrelevant.

Now, if we were to wash regularly on a character, there will be no C and D, as you won't be adding any points into MP. This only allows for regular washing, as from experience, you cannot use an AP reset to -1 MP +1 HP. From this, we can take that type B mana cannot directly transfer into HP, and is different from the mp/hp pool Hiyo mentioned in his reply.

Now, if we were to MP wash on a character: it is said that you can now -1 MP +1 HP with AP resets. The way I'm understanding it, and the only possible reason this can happen, is with the new presence of type D mana. You will still wash type B mana regularly as they come, but the newly gained type D mana is of the same pool as your health pool. This, assuming if I'm correct, is the type of mana Hiyo explained in his reply, and is the mana that can be washed directly into your HP.

Please correct me if I'm mistaken