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  1. import re
  2.  
  3. s = "CEEEETTEEEEGGGCCBCTTBHHHHHCCEEEEEEEEETTEETT"
  4. pattern = r"(?<=[CEHBGITS])([CEHBGITS])\1*"
  5. print(re.sub(pattern, " \g<0>", s))
Success #stdin #stdout 0.02s 9512KB
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Standard input is empty
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C EEEE TT EEEE GGG CC B C TT B HHHHH CC EEEEEEEEE TT EE TT
https://ideone.com/g5LKS9
language:
Python 3 (python  3.12)
created:
3 years ago
visibility:
secret

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