12. When possible, compute the truth values of the simple components in the following compound propositions. If no truth value can be computed, write a question mark (?) under the letter or letters with unknown truth value.

*1. KvD FT 2. QN T 3. B=D TF *4. N-G TT 5. S B TF 6. K.B T *7. CV A TF 8. S=E T 9. M-R TT *10. HvJ TT 11. E P TF 12. HvS T *13. C-P F 14. G.B F 15. S-Q TF +16. GvK F 17. N--P TT 18.-A-D FT *19. -LOM TF 20. E-M TF 21. -N=R FF *22. ~(HV B) T 23. Q(R.S) TF 24. K(SM) TF F 25. Av (C-R) FT