todo for extracting sep_wrd into its own file and unit test
todo for extracting sep_wrd into its own file and unit test

yngcan/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor,yngcan/patentprocessor,nikken1/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor