Answer:
1. -11 B
2. -5 R
3. -8 E
4. -12 A
5. -2 K
6. 7 T
7. -5 H
8. 5 R
9. 2 O
10. 8 U
11. -6 G
12. -5 H
It spells breakthrough
Step-by-step explanation: