My reply is that I have developed my own language whereby I represent the vowels in the alphabets in other to with some special characters which only myself, I mean no other person can interpret.
the way you do is very cool, it never crossed my mind that this method is quite safe in storing our private key. Yes, I will try to create a password formula that I only know myself to encrypt my private key, and the formula is only stored in my brain and there is no digital trace that can crack it.
Thank you for some useful tips, I hope this method is safe ...