Macro/VBA for auto hide unhide rows

[louvaek]

This is the second thread I make over here, but it concerns the same question from my first thread (but a little more difficult, since I had to change my sheet)

Attached, you can see my file where the code has to it's work

I'll try to explain it simple, but if I wasn't clear on something, please ask me.

ROW 12 = always visible
ROW 13= hiden if C12 & D12 & E12 & F12 & G12 are empty. From the moment the user makes an input in one of those 5 cells, ROW 13 should unhide
ROW 14= hiden if C13 & D13 & E13 & F13 & G13 are empty. From the moment the user makes an input in one of those 5 cells, ROW 14 should unhide
...
ROW 21 = hiden if C20 & D20 & E20 & F20 & G20 are empty. From the moment the user makes an input in one of those 5 cells, ROW 21 should unhide

Same store on ROW 41 till 50; 65 - 74; 80 - 89; 92 - 94.
Always one row that is always visible by default (the first one), and the ones behind become visible from the moment user makes an input in the row before.

It's important that the code has no restrictions on the amount of rows, because rows will be inserted or deleted in time (concerning rows 4 - 11; 22 - 40; ...)
Next thing very important to me, is that the excisting macro's (color cells with comment & make user input auto uppercase) keep working.
And last but not least: if C12 & C13 & C14 has an value, and the user deletes C13, C14 should keep being visible (in my thread before it was hiding rows with values in).

Hope I made it clear enough
Thanks for any help in advance !