In a certain code language, 'DANCE' is written as 'ADNEC' and ‘DISCO’…

1  2    3    4   5    6   7     8    9  10  11  12  13

 A   B   C    D   E    F   G    H    I    J    K    L   M

 ↓    ↓    ↓    ↓    ↓     ↓   ↓    ↓     ↓   ↓    ↓    ↓    ↓

 Z   Y    X   W   V    U   T    S    R   Q   P    O   N

26  25  24  23  22  21  20  19  18  17  16  15  14

******************************************************

THE LOGIC FOLLOWED HERE IS :

THE FIRST AND IIND LETTERS ARE INTERCHANGED AND FOURTH AND FIFTH LETTERS ARE INTERCHANGED

AND THIRD ARE SAME

AS

D → (INTERCHANGE) → A

A → (INTERCHANGE) → D

N → (SAME ) →N

C → (INTERCHANGE) → E

E → (INTERCHANGE) → C

AND

D → (INTERCHANGE) → I

I → (INTERCHANGE) → D

S → (SAME ) → S

C → (INTERCHANGE) → O

O → (INTERCHANGE) → C

SIMILARLY

D → (INTERCHANGE) → R

R → (INTERCHANGE) → D

E → (SAME ) → E

A → (INTERCHANGE) → M

M → (INTERCHANGE) → A