look for the secret word

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Across
  1. 4. united.......
  2. 6. i'm the the residence of the king
  3. 7. i'm the famous clock of england
Down
  1. 1. i'm dead in 2023
  2. 2. i'm a famous playwright
  3. 3. i'm the capital city of england
  4. 5. i represent the england and i'm red and white