injection:
n.
1.the forceful insertion of a substance under pressure
2.any solution that is injected (as into the skin)
3.the act of putting a liquid into the body by means of a syringe
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Rules to play Rubiks Cube
Last U D edges
Since EM1 affects FD, there will be one edge in U and one in D that cannot be settled by EM1. Solve them simultaneously as follows
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Move the edge required at FD to UF (using some form of EM1B), and the edge required at UF to BR using Mn; then
EM1BR will capture BR into UF, while at the same time moving UF to FD.
This assumes that at least one of the two required pieces is in the M slice. It does not work if FD and UF are occupying each others location. In that case, we consider it as an edge exchange (FD,FU) and settle them later.