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 letter-cluster pair DOES NOT belong to that group?
(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)
- AOption (a)
PT - NR
- BOption (b)
JK - JI
- COption (c)
QU - OS
- DOption (d)
JN - HL
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Correct answer
PT - NR
