VHF2L
VHF2L is used for the 4th F2l slot following any F2L method that could leave the cube as such. These algorithms are a subset of ZBF2L in which the pair is already solved. The algorithms insert the pair while simultaneously orienting the LL edges. There are technically 32 cases but due to mirrors I only count them as 16.
Credit to Lars Vandenbergh for the algs.