Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.

TWYBC

THE LOGIC,

1) QTWZC,

Q ->(+3) -> T ->(+3) -> W ->(+3) -> Z ->(+3) -> C

2) HKNQT,

H ->(+3) -> K ->(+3) -> N ->(+3) -> Q ->(+3) -> T

3) BEHKN,

B ->(+3) -> E ->(+3) -> H ->(+3) -> K ->(+3) -> N

4) TWYBC,

T ->(+3) -> W ->(+2) -> Y ->(+3) -> B ->(+1) -> C

Thus, TWYBC is correct option.