Ecken parallel tauschen NS - Kanten wenden NW
moving corners parallel NS - flipping edges NW
U R' F R D R U R² U'
a
F' R² U R' U' R² U'
(17,20)
acube
R' F R D R U R² U'
a
F' R² U R' U' R²
(17,20)
derived from acube