Troping or Trooping: How To spell?

The word Troping is misspelled against Trooping, which is present continuous of "Troop"

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

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