original way
- FU"R
- U or U' depending
- R'U"F'
new way: right
- URU'R'U'F'UF or left
- U'L'ULUFU'F'
- position correct corner in bottom right (viewed from above)
- L'URU'LUR'U'
- position correct edge on right (viewed from above) ?
- RBLT'L'B'R'F'TF
- R'DRFDF'
- U or U'
- reverse step 1
- ?
- FUDL"U"D"R
- U or U' depending on position of top edge
- reverse step 2