4 Answers
WX are the next letters
WX
3 letters between them
CD-efg-HI-jkl-MN-opq-RS-tuv-WX
There is a three letter gap between each pair:
CD (EFG) HI (JKL) MN (OPQ) RS (TUV) WX
So the next two letters are WX.
WX are the next letters
WX
3 letters between them
CD-efg-HI-jkl-MN-opq-RS-tuv-WX
There is a three letter gap between each pair:
CD (EFG) HI (JKL) MN (OPQ) RS (TUV) WX
So the next two letters are WX.