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

2, 4, 8  8, 2, 4 4, 2, 8 8, 4, 2

4, 2, 8

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