Decode This!
Using this key, decode the following message
A - 6
B - 12
C - 9
E - 8
H - 2
I - 10
K - 4
O - 7
P - 3
R - 5
S - 1
T - 11
U - 13
__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ ! 7 13 5 3 6 9 4 10 1 11 2 8 12 8 1 11