The word Thurok is misspelled against Thurrok, a noun meaning "The hold of a ship; a sink."
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Thurrok has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings thu & ok which should not be misspelled with single 'R'
Wrong Spelling:  thu-r-ok 
Correct Spelling:  thu-rr-ok 
Check more misspelled words of Thurrok to spell it correct.