A faulty passage involves a negative path through failure to hall and/or to door properly. Since all went wrong, your clear was off!
A faulty barrier involves a negative blocking through failure to wall and/or to door properly. Since all went wrong, your section was off!

Door will remind path how hall relates to clear, in return clear can remind door that it is an action of passage.
Door will remind blocking how wall relates to section, in return section can remind door that it is an action of barrier.

A faulty q1n involves a negative q1s through failure to q1e and/or to q1r properly. Since all went wrong, your q1o was off!
A faulty q1n involves a negative q1s through failure to q1e and/or to q1r properly. Since all went wrong, your q1o was off!

q1r will remind q1s how q1e relates to q1o, in return q1o can remind q1r that it is an action of q1n.
q1r will remind q1s how q1e relates to q1o, in return q1o can remind q1r that it is an action of q1n.