Concept:
In this coding pattern, each letter of the word is shifted one position forward in the English alphabet.
Step 1: {\color{red}Analyze the given example.}
\[
A \rightarrow B
\]
\[
P \rightarrow Q
\]
\[
P \rightarrow Q
\]
\[
L \rightarrow M
\]
\[
E \rightarrow F
\]
Thus, every letter moves one step forward.
Step 2: {\color{red}Apply the same rule to ``MANGO''.}
\[
M \rightarrow N
\]
\[
A \rightarrow B
\]
\[
N \rightarrow O
\]
\[
G \rightarrow H
\]
\[
O \rightarrow P
\]
Step 3: {\color{red}Write the coded word.}
\[
MANGO \rightarrow NBOHP
\]
Thus, the coded word is:
\[
\boxed{NBOHP}
\]
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