fork download 
  1. import re
  2.  
  3. regex = r"\b(?=[wk]*w)w*k[wk]*\b"
  4. test_str = "wk wkw wkk kwk kkw wkwk kwkw wkkw kwkk kwkwk wkwkwk wkwoowkwko www k kkk wkwkland"
  5. print(re.findall(regex, test_str))
  6.  
Success #stdin #stdout 0.02s 9456KB
comments (?)
stdin 
Standard input is empty
stdout 
['wk', 'wkw', 'wkk', 'kwk', 'kkw', 'wkwk', 'kwkw', 'wkkw', 'kwkk', 'kwkwk', 'wkwkwk']
https://ideone.com/OFFFD2
language:
Python 3 (python  3.12)
created:
5 years ago
visibility:
secret

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