Often danced improper
A1: Side R with partner. Back-to-back.
A2: Side L with neighbour. Left shoulder back-to-back.
B1: Two-hand turn neighbour 1½ (skip-change). Two-hand turn partner once (walk).
B2: Ones full figure eight up through twos.
Cecil Sharp's version is proper and has curly siding (left shoulder) and a right-shoulder back-to-back both times.
Some twos may decide to join in B2 by casting into a double figure eight.