DSSSB · Reasoning

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which one does not belong to that group? (Note: Incongruent letter-cluster pairs are not based on the number or position of consonants/vowels in them.)

  1. CF - HK
  2. TO - QH
  3. IL - NQ
  4. GJ - LO
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