Question: The regular expression COIS#### will return (instances separated by spaces): 1234 1235 1236 1237 COIS2750 COIS1620 COIS3750 COIS2830 O cois@#$% CO15%^$& COIS 960)@ COIS&&&& O

 The regular expression COIS#### will return (instances separated by spaces): 1234

The regular expression COIS#### will return (instances separated by spaces): 1234 1235 1236 1237 COIS2750 COIS1620 COIS3750 COIS2830 O cois@#$% CO15%^$& COIS 960)@ COIS&&&& O COIS COISCOIS COISCOISCOIS COISCOISCOISCOIS COISA1B2 COIS1A1B COISQQ11 COIS11ZZ

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