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ular
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Regular Expression
r"
^([^K] |K(?=$|[^O]|O(?=$|[^R]|R(?=$|[^O]|O(?=$|[^N]|N(?=$|[^K]|K(?=$|[^O]|O(?=$|[^R]|R(?=$|[^K]|K(?=$|[^O]))))))))))*$
"
Input 1
1
New
KKORONKORKP