If 'Good' can be coded as 14, 30, 30, 8, then 'BAD' will be coded as :

In alphabetical order

GOOD

G is 7th letter 7 x 2 = 14 ; O is 15th letter 15 x 2 =30 ; O is 15th letter 15 x 2 =30 ; 

D is 4rth letter 4 x 2 = 8

so it codes 14,30,30,8

BAD

B is 2nd letter 2 x 2= 4 ; A is 1st letter 1 x 2 = 2 ;D is 4rth letter 4 x 2 = 8

so it codes 4,2,8