A Level OCR Chemistry - organic synthesis

I was revisiting the organic synthesis map and realised that I couldn't find the drawn mechanisms with the curly arrows for many of the routes. Does anyone know or have a list of the synthesis routes for which I need to know the mechanisms?

Based on my vague memory of the OCR A syllabus, the only ones you need to know how to draw mechanisms for are as follows:
AS level:
-Alkene + hydrogen halide —> haloalkane
-Alkene + halogen/interhalogen —> dihalogenoalkane
-Haloalkane (1° or 2°) + NaOH —> alcohol
Year 13 (requires AS level + the following):
-Aldehyde/ketone + NaBH4 —> alcohol
-Aldehyde/ketone + KCN —> hydroxynitrile
-Haloalkane (1° or 2°) + KCN —> nitrile
-Haloalkane (1° or 2°) + NH3 —> amine
-Arene + conc HNO3 + conc H2SO4 —> nitroarene
-Arene + halogen + AlCl3/FeCl3 —> chloroarene