deletions | additions       diff --git a/layout.md b/layout.md  index a3b1a6c..40d08d8 100644  --- a/layout.md  +++ b/layout.md 
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section_Question_3__.tex  textit_On_arc_consistency_begin__.tex  subsection_Constraint_Graph_Assuming_that__.tex  subsection_A_B_Since_A__.tex subsection_Tracing_subsubsection_A_B__.tex