HH 12 is related to FE -4 in a certain way. In the same way, EI 13 is related…

Concept

In a mixed letter-number analogy, treat each character position and the number as independent components.

Infer one transformation for each component from the given pairs, verify that the transformations remain consistent, and then apply them to the new group.

Application

1. For the first letter, H becomes F and E becomes C, so the consistent shift is two places backward. Applying it to M gives K.

2. For the second letter, H becomes E and I becomes F, so the consistent shift is three places backward. Applying it to P gives M.

3. For the number, 12 becomes -4 and 13 becomes -3, so the consistent operation is subtraction of 16. Applying it to 20 gives 20 - 16 = 4.

Cross-check

The rules reproduce both examples: HH 12 becomes FE -4, and EI 13 becomes CF -3. Thus the same component-wise rules are consistent.

Result

Applying all three transformations to MP 20 gives KM 4.