The word Sufocating is misspelled against Suffocating, an adjective meaning "from Suffocate, v."
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Suffocating has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Su & ocating which should not be misspelled with single 'F'
Wrong Spelling:  Su-f-ocating 
Correct Spelling:  Su-ff-ocating 
Check more misspelled words of Suffocating to spell it correct.