deletions | additions       diff --git a/layout.md b/layout.md  index 40d08d8..d7bc14b 100644  --- a/layout.md  +++ b/layout.md 
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section_Question_3__.tex  textit_On_arc_consistency_begin__.tex begin_center_On_arc_consistency__.tex  subsection_Constraint_Graph_Assuming_that__.tex  subsection_Tracing_subsubsection_A_B__.tex