The word Casing is misspelled against Causing, which is present continuous of "Cause"
-->
Word contains consecutive vowels 'AU' in between alphabets c & sing is misspelled as 'A' as letter 'U' is phonetically ignored
Wrong Spelling:  c-a-sing 
Correct Spelling:  c-au-sing 
Find more wrongly spelled words of Causing to spell it well.