{{explanation}}
Special shape of set: 1M with 2M on R stands BtoB with 4M and 3M respectively ; all W face their P. The W are “outers”, the M “inners”.

1–
: All set to P with some suitable Strathspey steps (e.g. Fling steps)
9–
: ½Reel: all C pass Lsh, M to partners' (“outer”) positions, 1W / 3W veering left to 2M / 4M positions, 2W+4W straight ahead to 3M / 1M positions | repeat from new positions ; repeat twice (all end diagonally opposite starting positions)
17–
: All set to partners again
25–
: Repeat ½Reel to original positions

{{explanation}}
Repeat at will.