
M’ U (R U R’ U R U2′ R’) U M (vertical lightning shape & a block on L-face)
M U’ (R U R’ U R U2′ R’) U’ M’ (vertical lightning shape & a block on R-face)
I chose these algorithms because both have the same kind of finger tricks structure with Sune pattern.
I am not good at turning M by my ring finger, so I use mostly my left thumb, pushing down UF edge followed by slightly tilting L-slice backward.