After their second turn, 1c casts to 4pl on  as 4c steps up
repeat 3 times with 2W, 3W and 4W leading in turn
In 17-32, the corners traditionally set one bar to the person you just passed, then one bar to the next person to pass. In a variant for [19-24] 1c turns BH in PdB.
On 2nd chord, 3c+4c change sides (to 1,2,3x,4x)
Note: Cosh explicitly tells 1c to pass Lsh in [9-24]; however the Rsh pass is quite common, and nicknamed »Mairi's Divorce«.
Note: This crib follows the current way of dancing. In the original instructions, the promenade [25-32] is cclw. Bill Hamilton said in 'hindsight' this promenade should be clw, but preferred not to change the official instructions. Bill disapproved of another variant, where the circle [121-128] is continued to the R only.