4x4 parody algorithm
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Switch edge perpendicular
R, U, R' U' r2, U2, r2, (Uu)2, r2, (Uu)2 (re-enter pair)
Flip edge yellow
Rr, U2, x, Rr, U2, Rr, U2, Rr' U2, Ll, U2, Rr' U2, Rr, U2, Rr' U2, Rr'
Switch edge parallel
r2, U2, r2, (Uu)2, r2, (Uu)2
