BQ
Regular
Hmm, in fact, since I selected the "other" algorithm, there're some insertions like "L2 F L2 F'", which is not so common. I've searched for only 3-cycle algorithms. See here: http://mf.qiyuuu.com/cube/if/7048d95774ae1cade5320b1933157d3c.cubeThanks for the answer, and for searching it manually!
23 is surprising. Although I doubt I could have even gotten sub-27.
It's 27 moves.