Key for Reference
F - Front Face Clockwise
F' - Front Face Anticlockwise
B - Back Face Clockwise
B' - Back Face Anticlockwise
U - Upper Face Clockwise
U' - Upper Face Anticlockwise
D - Down Face Clockwise
D' - Down Face Anticlockwise
L - Left Face Clockwise
L' - Left Face Anticlockwise
R - Right Face Clockwise
R' - Right Face Anticlockwise
Number next to it indicates the number of rotation