In this page, I will show the algorithms I chose for the 4 cases of the Pattern 4.
I call this pattern “smoke”.
No. 18: UFR and UBR look at a side
https://www.speedcubedb.com/a/3×3/WV/WV_18
Algorithm: U R U2′ R’
It is worth using this WV, because it is easy to recognize the pattern, and it saves 6 turns, comparing with (R U’ R) + OLL.

No. 19: UFR looks at a side
https://www.speedcubedb.com/a/3×3/WV/WV_19
Algorithm: (U L’) (U R U’ R’) (L U’ R U’ R’)

No. 16: UBL looks at a side
https://www.speedcubedb.com/a/3×3/WV/WV_16
Algorithm: (R’ D’) (R U R’ D) (R2 U2′ R’)

No. 17: None of the CP looks at a side
https://www.speedcubedb.com/a/3×3/WV/WV_17
Algorithm: U’ (R’ F’ R) U2′ (R U2′ R’) F
