Here's a breakdown:

* Nerve Agents: These agents disrupt the nervous system, causing a range of symptoms from muscle weakness to seizures and even death. Examples include Sarin, Tabun, VX, and Soman.

* Blister Agents: These agents cause severe skin burns and blistering, as well as internal damage to the lungs and eyes. Examples include Mustard Gas (HD), Lewisite (L), and Phosgene Oxime (CX).

It's important to note that M8 paper is not a foolproof method for detecting all chemical agents. Its sensitivity and specificity depend on factors like the concentration of the agent, the ambient temperature, and the age of the paper.