The two “Fung” OLLs — the large “square” lighting bolts — each have an occurrence probability of 1/54, and together 1/27 (3.7%). They seem to appear more often for me; I would have guessed more like 1/15. Whatever the frequency, it was time to learn these.

The standard algs for these didn’t flow very well for me. Digging a bit deeper, I found the alternate ones with the S moves to be easy and regrip-less. Here’s a video tutorial:

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