In a certain code language, 'GRATEFUL' is coded as '209267562112', 'INSTANCE' is coded as '18138711435'. What is the code for 'LIKEWISE' in that code language ?

15181622239195

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 :

G → (OPP. POSITIONAL VALUE)  → T 20

R → (OPP. POSITIONAL VALUE)  → I 9

A → (OPP. POSITIONAL VALUE1)  → Z 26

T → (OPP. POSITIONAL VALUE)  → G 7

E → (PLACE VALUE)  → 5

F → (PLACE VALUE)  → 6

U → (PLACE VALUE)  → 21

L → (PLACE VALUE)  → 12

AND

I → (OPP. POSITIONAL VALUE)  → R 18

N → (OPP. POSITIONAL VALUE)  → M 13

S → (OPP. POSITIONAL VALUE1)  → H 8

T → (OPP. POSITIONAL VALUE)  → G 7

A → (PLACE VALUE)  → 1

N → (PLACE VALUE)  → 14

C → (PLACE VALUE)  → 3

E → (PLACE VALUE)  → 5

SIMILARLY

L → (OPP. POSITIONAL VALUE)  → O 15

I → (OPP. POSITIONAL VALUE)  → R 18

K → (OPP. POSITIONAL VALUE1)  → P 16

E → (OPP. POSITIONAL VALUE)  → V 22

W → (PLACE VALUE)  → 23

I → (PLACE VALUE)  → 9

S → (PLACE VALUE)  → 19

E → (PLACE VALUE)  → 5