Survyllants or Surveillants: How To spell?

The word Survyllants is misspelled against Surveillants, which is plural of "Surveillant"

Word contains consecutive vowels 'EI' in between alphabets surv & llants is misspelled as 'Y'
Wrong Spelling:  surv-y-llants 
Correct Spelling:  surv-ei-llants 
Check more misspelled words of Surveillants to spell it correct.