Monprising or Mainprising: How To spell?

The word Monprising is misspelled against Mainprising, which is present continuous of "Mainprise"

Word contains consecutive vowels 'AI' in between alphabets m & nprising is misspelled as 'O'
Wrong Spelling:  m-o-nprising 
Correct Spelling:  m-ai-nprising 
Find more incorrect spellings of Mainprising to spell right way.

You might be interested to know

Mosocal or Mosaical?

Outvillon or Outvillain?

Paravol or Paravail?