In a certain code language, 'TOPICS' is written as 'QAGONS' and 'GREATH' is written as 'FRYDQF'. How will 'BANDEF' be written in that language?

DCBMZA

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:

REVERSE THE APLHABETS AND CODING IS DONE AS FOLLOWS

TOPICS = SCIPOT

S → (-2) → Q

C → (-2) → A

I → (-2) → G

P → (-1) → O

O → (-1) → N

T → (-1) → S

AND,

GREATH = HTAERG

H → (-2) → F

T → (-2) → R

A → (-2) → Y

E → (-1) → D

R → (-1) → Q

G → (-1) → F

SIMILARLY

BANDEF = FEDNAB

F → (-2) → D

E → (-2) → C

D → (-2) → B

N → (-1) → M

A → (-1) → Z

B → (-1) → A