N-perm a

Here are all the algorithms for this case, ranked by popularity.
Please submit any algorithms that are not included.

32
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55
.
1.)
r' D r U2 r' D r U2 r' D r U2 r' D r U2 r' D r
563
.
2.)
R U R' U (R U R' F' R U R' U' R' F R2 U' R') U2 R U' R'