A1: In fours, first corners give R hands, balance forward and back; box the gnat. R-hand star.
A2: 2nd corners same L. L-hand star, men up, women down to...
B1: (16 bars): All single file anti-clockwise half-way. Lines set R and L; turn single. Middles cross, go round one person to end place; ends lead in. All 2-hand turn partner once around, so ends are now improper.
B2: “Zigzag”: Ends right-hand turn half-way, those facing in cross left hand on left diagonal, right straight across, left diagonal (with each other). New ends as much (chasing partner). Progressed position: 3, 1, 4, 2.
See notes at https://colinhume.com/inst4.ht