regex that checks if the string starts with two upper-case followed by numbers -

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hi guys need regex checks if string starts two upper-case followed numbers:

example: de123456789

thanx lot of.

literally:

^[a-z]{2}\d+
  1. ^ - start of string
  2. [a-z] - upper case letter
  3. {2} - 2 of those
  4. \d - digit
  5. + - 1 or more of those

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