The word Strok is misspelled against Strook, a noun meaning "A stroke."
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Strook has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings str & k which should not be misspelled with single 'O'
Wrong Spelling:  str-o-k 
Correct Spelling:  str-oo-k 
Find more incorrect spellings of Strook to spell right way.