'LIGHT' is written as 'JGEFR' in a code language. Using the same rule, how is 'MONTH' written?

Each letter shifts two steps backward (L to J, I to G, G to E, H to F, T to R). Applying it to MONTH gives M to K, O to M, N to L, T to R, H to F, i.e. 'KMLRF'.