Colimating or Collimating: How To spell?

The word Colimating is misspelled against Collimating, which is present continuous of "Collimate"

Collimating has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings co & imating which should not be misspelled with single 'L'
Wrong Spelling:  co-l-imating 
Correct Spelling:  co-ll-imating 
Find more incorrect spellings of Collimating to spell right way.