A1: Ones down the middle, twos up the outside. Come back, turn neighbour half-way with handy hand.
A2: Ones down the outside, twos up the middle. Come back, meet with a left-hand turn all the way.
B1: Women chain across and back.
B2: Half promenade. Right and left through.
Emphasise the left-hand - it's unnatural for one side of the set. Note your new neighbour as you start each turn of the dance.