{{explanation}}
2 chords - 2nd chord 2s & 4s cross to opp sides

1-8
: 1s+2s & 3s+4s Set+Link; 1L+4M & 1M+4L turn LH. (2) 1 (4) 3
9-16
: 1s+4s dance Ladies' Chain (across the dance) with an extra 1/2 LH turn
  on bars 15-16 to end (2) 4 (1) 3
17-24
: Reels of 4 on sides but instead of pass LSh at end 1s+4s dance round to
  right BtoB facing corners (2) 1 (4) 3
25-32
: "Puffin Reels":

: 2s+3s dance diag reel of 4 (LH across in centre) **while**

: 1s+4s dance 1/2 diag reel round corner, pass LSh, dance 1/2 diag reel
  round next anticlockwise corner, pass LSh to face 3rd corner. (2) 4
  (1) 3
33-40
: 2s+4s & 1s+3s dance RH across; all turn partner 1.1/2 RH. End 2 (4) 1
  (3)