Preocupied or Preoccupied: How To spell?

The word Preocupied is misspelled against Preoccupied, which is past tense of "Preoccupy"

Preoccupied has double "cc" is mispronounced as "c"
Remember double 'CC' in between the strings Preo & upied which should not be misspelled with single 'C'
Wrong Spelling: Preo-c-upied
Correct Spelling: Preo-cc-upied
Check more misspelled words of Preoccupied to spell it correct.