🚀 go-pugleaf

Just for fun, I would like a collection of simple Rubik's Cube move
sequences from START that lead to positions where no two adjacent
cubelet faces are the same color.  The simplest one at the top of the
list is, of course, RRLLFFBBUUDD, leading to the well-known checkerbox
pattern, but I have made several other ones by mistake and not been able
to find a simple sequence to recreate them.

Of course, since any combination of edge flips in the checkerbox pattern
will still have no adjacent same-color faces, the criterion for the list
will have to be an arbitrary sense of "interesting-ness" and shortness
of the sequence.

Please use the notation Right, Left, Front, Back, Up, Down to indicate
clockwise turns; either RR or R2 meaning a half-twist of the Right side;
R' meaning an anti-clockwise quarter-turn of the Right side.

-- Jon Ferro               Einsprachigkeit ist heilbar