Standard marker layout I assume is red yellow blue purple going clockwise, starting north with A then 1 and so forth.

AQB I havent heard before.
Mario kart means stacking during her dashes and rotating as a group to bait dashes and puddles.
Enum 13 or 24 means players without marker or with enum meet there during tangled phases.
C41 is likely marker positions for the 2x Flare Buster (4+1) and 1x stack (c). It forms a triangle between the markers.
Same colour enum partners means to do enum with your partner of same colour of marker from their spread position. (A1, B2, etc)