Couples in a line
Pair A walk past one another, around and meet below B
Miror image dosido with B
Pair A cast off and spin in place
Pair A pulls past B, then past one another, then double back past one another, around B, and dosido (meanwhile, B cast off and down beside A)
Take hands in a line of 4, up a double and back, then A crosses over, and around down past B, ready to start over with a new B pair.