Determine whether the following symbolized arguments are valid or invalid by constructing a truth table for each.

1. K-K ~K 2. R R R 3. P=~N NvP 4. ~(GM) Mv-G -G 5. K=~L ~(L~K) KL 6. Z E (ZE) 7. (W-X) ~(X-W) Xv W 8. C=D Ev D E C 9. A = (BVC) -CvB AB 10. JO (KL) K(JL) (JvK) L 11. ~(K=S) S-(RVK) Rv-S 12. E>(FG) F (GH) EH 13. A (NvQ) ~(Nv~A) A Q 14. GH R=G ~HvG R=H 15. LM MON NOL Lv N 16. ST SU-T -TOS Sv-T