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L6 L

Setup r U2 R' F R' F' R2 U2 r'
Setup r U2 R' F R' F' R2 U2 r'

Recognition: Checkerboard; the left pair and right pair each swap.

rU2R' R'FRF' RU2r'
F RUR' R'FRF' RU'R' F'
U2 R'U'RU R'F'RUR'U'R'FR R
U2 L'U2RU'R'U2L RU'R'
U RUR' L'U2RUR'U2L
U2 R'U'RU' FU'R'U'RUF'

6 of 8 Algorithms