In a certain code, PLEADING is written as FMHCZDKO. How is SHOULDER written in that code?

The code pattern needs to be identified by comparing PLEADING with FMHCZDKO.

Examining the relationship between corresponding letters:

PLEADING has 8 letters: P-L-E-A-D-I-N-G

FMHCZDKO has 8 letters: F-M-H-C-Z-D-K-O

Testing if the word is reversed first:

PLEADING reversed = GNIDAELP

Now comparing GNIDAELP with FMHCZDKO:

G → F (shift back by 1)

N → M (shift back by 1)

I → H (shift back by 1)

D → C (shift back by 1)

A → Z (shift back by 1, wrapping around)

E → D (shift back by 1)

L → K (shift back by 1)

P → O (shift back by 1)

The pattern is: Reverse the word, then shift each letter back by 1 position in the alphabet.

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Applying this pattern to SHOULDER:

SHOULDER reversed = REDLUOHS

Shifting each letter back by 1:

R → Q

E → D

D → C

L → K

U → T

O → N

H → G

S → R

The coded form is: QDCKTNGR

Therefore, SHOULDER is written as QDCKTNGR in that code.