On 2nd chord, 1c change sides. In top or bottom place couples change sides on [31-32]of the next turn. This dance can be done round the room.
Four dancers, numbered 1,2,3,4 clw, stand in a square facing a fifth dancer in the middle, who faces the gap between numbers 1 and 4
4c+5c+6c start on opposite sides (1,2,3,4x,5x,6x)
[25-32] represent tacking the ship, therefore no polite turns
Trio face trio RR.
Many variations in handing, polite turns and shoulder exist
Note: Cosh explicitly tells 1c to pass Lsh in [9-24]; however the Rsh pass is quite common, and nicknamed »Mairi's Divorce«.
Any number of couples in a big circle, facing ctr, W on M's R, hands joined