Harponing or Harpooning: How To spell?

The word Harponing is misspelled against Harpooning, which is present continuous of "Harpoon"

Harpooning has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings harp & ning which should not be misspelled with single 'O'
Wrong Spelling:  harp-o-ning 
Correct Spelling:  harp-oo-ning 
Find more incorrect spellings of Harpooning to spell right way.

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