Consider the following premises. For all x_6, x_6 will write a letter or x_6 is a server. For all x_6, x_6 is not a server. For all x_6, x_6 will not write a letter or x_6 is a lawyer. Can we infer the following from them? There is at least one x_6 for which neither x_6 is a lawyer nor x_6 is a soldier.
 From the fact that for all x_6, x_6 will write a letter or x_6 is a server, and that for all x_6, x_6 will not write a letter or x_6 is a lawyer we can infer that for all x_6, x_6 is a server or x_6 is a lawyer. From the fact that for all x_6, x_6 is a server or x_6 is a lawyer, and that for all x_6, x_6 is not a server we can infer that for all x_6, x_6 is a lawyer. Finally, from the fact that for all x_6, x_6 is a lawyer we can infer that for all x_6, x_6 is a lawyer or x_6 is a soldier, which contradicts that There is at least one x_6 for which neither x_6 is a lawyer nor x_6 is a soldier. Therefore, the answer is no.