R2 D L2 B2 U2 L B2 R' U' L R2 U' F U' B F2 D R2 F'
Solution
z
//
inspection
L' U x' D' R' D r U2 x'
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cross
R U' R' U R U' R'
//
1st pair
y' U R U' R' U y' R' U' R
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2nd pair
U' y' U' R U R' U2 R U2' R2' U' R
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3rd / 4th pairs / OLS
U' x R' U R' D2 R U' R' D2 (R l) U'
//
PLL