Espagnole: both W lead RHJ to M side, cross and cast back to exchanged places while Men cross to W side, lead RHJ back to M side crossing to exchanged places ; all turn P EH (2,1)
16-bar pattern: ½ RH turn | Promenade down 2 places ; cross LH | cast up one ; Set turning to | cast up 1 place ; turn RH ½ | Promenade down 1 place to face 2M position.
After 2nd turn the old 1c casts to 4pl on the new [1-2]
The first two turns are in Strathspey time, the second two are in Reel time.
Note: Cosh explicitly tells 1c to pass Lsh in [9-24]; however the Rsh pass is quite common, and nicknamed »Mairi's Divorce«.