The coding pattern appears to be:
- Take pairs of letters from the original string
- EGHIKMKM → EG-HI-KM-KM → F-I-L-L (next letter in alphabet: E→F, H→I, K→L, K→L)
Similarly for EGDFDFKM:
- EG-DF-DF-KM → next letters: E→F, D→E, D→E, K→L → FEEL
Thus, the correct coding is (2) FEEL.