%Error: t/t_var_port2_bad.v:7:11: Input/output/inout declaration not found for port: 'portwithoin'
    7 | module t (portwithoin);
      |           ^~~~~~~~~~~
%Error: t/t_var_port2_bad.v:8:10: Input/output/inout does not appear in port list: 'portwithin'
    8 |    input portwithin;
      |          ^~~~~~~~~~
%Error: Exiting due to