Choose the Odd Letter Group

1 PK    IK  PN   SU   WY
2. BCD   KMN   QRS   GHI   WXY
3. POCG   KLIZ   BUDX   FQMV   ARTG
4.CZHK   MLAG   XUBU   SENO   YDFP
5. CFIL   PSVX   JMPS   ORUX   QTWZ


ANS; PN (Reverse Order)
KMN  (Not in Consecutive Order)
 FQMV(No Vowel)
  XUBU (letter is repeated)
 PSVX(not moving 3 steps forward in each letter)