In a certain code language, 'NODUS' is written as 'KJUDF' and 'PILLOW' is written as 'IPMMJB'. How will 'NAVEL' be written in that language?

Let's decipher the relation between letters:Word: NODUS $\to$ Code: KJUDFIf we reverse the word NODUS, we get SUDON.Now apply standard shifts to SUDON:$\text{S}\stackrel{-8}{\to }\text{K}$$\text{U}\stackrel{-11}{\to }\text{J}$ — This looks non-linear.Let's check direct cross patterns or opposite letters:$\text{N}\stackrel{-3}{\to }\text{K}$$\text{O}\stackrel{-5}{\to }\text{J}$$\text{D}\stackrel{+1}{\to }\text{U}$ — No.Let's test another perspective: Write word letters in alphabetical order or reverse order?Let's reverse the code: FDUJK$\text{N}\stackrel{-8}{\to }\text{F}$$\text{O}\stackrel{-11}{\to }\text{D}$ Let's review the second word: PILLOW $\to$ IPMMJBNotice that PILLOW reversed is WOLLIP:$\text{W}\stackrel{\text{opposite}}{\to }\text{D}$? No.Let's re-examine carefully:Word: NODUSLetters: $\text{N, O, D, U, S}$ Let's take opposites of letters:$\text{N}\to \text{M}$$\text{O}\to \text{L}$$\text{D}\to \text{W}$$\text{U}\to \text{F}$$\text{S}\to \text{H}$ Then subtract from opposites?Let's look at the options for NAVEL: All start with KX...If $\text{N}\to \text{K}$ ($-3$), then for $\text{PILLOW}$: $\text{P}\stackrel{-7}{\to }\text{I}$.What if it is based on Vowels/Consonants or reverse positioning?Let's look closely at NODUS $\to$ KJUDF:$\text{N}(-3)=\text{K}$$\text{O}(-5)=\text{J}$$\text{D}(+17)=\text{U}$$\text{U}(-17)=\text{D}$$\text{S}(-13)=\text{F}$ Let's try mapping the letters in reverse order:Last letter $\text{S}\stackrel{-8}{\to }\text{K}$$\text{U}\stackrel{-11}{\to }\text{J}$$\text{D}\stackrel{+1}{\to }\text{U}$$\text{O}\stackrel{-11}{\to }\text{D}$$\text{N}\stackrel{-8}{\to }\text{F}$ Let's re-read the exact string for PILLOW: IPMMJB.Notice:$\text{P}\to \text{I}$$\text{I}\to \text{P}$$\text{L}\to \text{M}$$\text{L}\to \text{M}$$\text{O}\to \text{J}$$\text{W}\to \text{B}$ Ah! Let's examine pairs of opposites:$\text{P}+\text{I}=16+9=25$$\text{I}+\text{P}=9+16=25$$\text{L}+\text{M}=12+13=25$$\text{L}+\text{M}=12+13=25$$\text{O}+\text{J}=15+10=25$$\text{W}+\text{B}=23+2=25$ Wow! The sum of the positional values of the letter and its corresponding code letter is 25!Let's verify this rule with NODUS:$\text{N (14)}+\text{K (11)}=25$$\text{O (15)}+\text{J (10)}=25$$\text{D (4)}+\text{U (21)}=25$$\text{U (21)}+\text{D (4)}=25$$\text{S (19)}+\text{F (6)}=25$ The rule is perfectly verified: $\text{Letter Value}+\text{Code Value}=25$.Now, let's find the code for NAVEL:$\text{N (14)}\to 25-14=11\to \text{K}$$\text{A (1)}\to 25-1=24\to \text{X}$$\text{V (22)}\to 25-22=3\to \text{C}$$\text{A (5)}\to 25-5=20\to \text{T}$$\text{L (12)}\to 25-12=13\to \text{M}$ Thus, the code is KXCMT.