Consider the following premises. ~q. q <-> q_2. q_2 <-> p_16. p_16 -> t_2. t_2 -> p_16. Can we infer t_2 from them? If possible, name the inference rules being used at each step.
 From p_16 -> t_2, t_2 -> p_16 we can infer p_16 <-> t_2 via biconditional introduction. From q <-> q_2, ~q we can infer ~q_2 via biconditional elimination. From q_2 <-> p_16, ~q_2 we can infer ~p_16 via biconditional elimination. From p_16 <-> t_2 we can infer t_2 -> p_16 via biconditional elimination. Finally, from t_2 -> p_16, ~p_16 we can infer ~t_2 via modus tollens, which contradicts t_2. Therefore, the answer is no.