1-8
: 1s+2s dance RH across; 1s+2s dance LH across
9-16
: LSh reels of 3 on sides (1s LSh to 2s). At end 1M+2M also 1L+2L pass
  LSh, 1s face down, 3s face up. 2 1 3
17-24
: Grand Chain (2s cross, 1s+3s change places on sides to start)
25-32
: 1s turn 3/4 RH **while** 2s & 3s cross LH with partner, 1L+2s also 1M+3s
  dance LH across [now (2) (1) (3)], all cross LH to own sides.  2 1 3