In a code language, if 'REPAIR' is written as 18101621818', then how will 'GALAXY' be written in that language?

721222425

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

CONSONANTS ARE CODED AS THEIR POSITION IN THE ALPHABET AND VOWELS ARE CODED AS THEIR POSITION NUMBER IS MUTIPLIED BY 2

R = 18

E = 5 × 2 = 10

P = 16

A = 1 × 2 = 2

I = 9 ×2 = 18

R = 18

REPAIR = 18101621818

SIMILARLY

G = 7

A = 1 × 2 = 2

L = 12

A = 1 × 2 = 2

X = 24

Y = 25

GALAXY = 721222425