Shampoed or Shampooed: How To spell?

The word Shampoed is misspelled against Shampooed, which is past tense of "Shampoo"

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

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