Answer:
it is actually 22, 14, 37, -12, 3, 13, -9, -19, 0, 5, 29, -4, -2, -12, 7
Explanation:
That is if you meant to say using the code 2,1,-1,-1,1,0,0,2,-1
You would match each letter to a number, the numbers you have given, then you multiply by the 2,1,-1,-1,1,0,0,2,-1 using matrices. That is your encoded message