On 2nd chord 3c+4c change sides to 1,2,3x,4x. Centro-symmetrical dance.
Deviser's Note: 1c can choose handing freely ; the timing is fluid, the barring only an approximation
Note by Drewry: On [65-68] and [69-72] the W use RH twice. This can be avoided by substituting: [65-68] »All set to P | change places passing Rsh, (M face out)«