My first try was 34 moves... and not RU gen... oh I got it... R U' R' U R U R' f R U R' U' f' U' R U R' U R' U2' R2 U R2' U R2 U' R' ???
oh I got it... R U' R' U R U R' f R U R' U' f' U' R U R' U R' U2' R2 U R2' U R2 U' R' ???