Crisa or Crissa: How To spell?
The word Crisa is misspelled against Crissa, which is plural of "Crissum"
Crissa has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings cri & a which should not be misspelled with single 'S'
Wrong Spelling:  cri-s-a  Correct Spelling:  cri-ss-a 
Find more wrongly spelled words of Crissa to spell it well.