In a certain code language, 'STAR’ is coded as '92678' and 'FLAG' is coded as '20261521'. How will 'LOGO' be coded in that language?

12201215

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 :

1) LETTERS ARE CODED AS OPPOSITE POSITIONAL VALUE

2) THEN POSITIONAL VALUE SHIFTED DIAGONALLY

AS

S → (OPPOSITE LETTER POSITIONAL VALUE)  → 8

T → (OPPOSITE LETTER POSITIONAL VALUE)  → 7

A → (OPPOSITE LETTER POSITIONAL VALUE)  → 26

R → (OPPOSITE LETTER POSITIONAL VALUE)  → 9

87269 BECOMES  92678

AND

F → (OPPOSITE LETTER POSITIONAL VALUE)  → 21

L → (OPPOSITE LETTER POSITIONAL VALUE)  → 15

A → (OPPOSITE LETTER POSITIONAL VALUE)  → 26

G → (OPPOSITE LETTER POSITIONAL VALUE)  → 20

21152620 BECOMES  20161521

SIMILARLY

L → (OPPOSITE LETTER POSITIONAL VALUE)  → 15

O → (OPPOSITE LETTER POSITIONAL VALUE)  →12

G → (OPPOSITE LETTER POSITIONAL VALUE)  → 20

O → (OPPOSITE LETTER POSITIONAL VALUE)  → 15

15122015  BECOMES  15201215